EXHIBIT 10.2



                           FORM OF TAX SHARING AGREEMENT

                   This TAX SHARING AGREEMENT (this "Agreement"), dated as
         of __________, 1997, by and among W. R. Grace & Co., a Delaware
         corporation ("Grace"), W. R. Grace & Co.-Conn., a Connecticut
         corporation and a wholly owned subsidiary of Grace ("Grace-
         Conn."), and Sealed Air Corporation, a Delaware corporation
         ("Sealed Air").


                                      RECITALS

                   WHEREAS, Grace, Packco Acquisition Corp., a Delaware
         corporation and a wholly owned subsidiary of Grace, and Sealed
         Air have entered into an Agreement and Plan of Merger (the
         "Merger Agreement");

                   WHEREAS, Grace, Grace-Conn. and Grace Specialty
         Chemicals, Inc., a Delaware corporation and a wholly owned
         subsidiary of Grace ("New Grace"), have entered into the
         Distribution Agreement;

                   AND WHEREAS, Grace, on behalf of itself and the Packco
         Group, and Grace-Conn., on behalf of itself and the New Grace
         Group, wish to provide for the allocation between the Packco
         Group and the New Grace Group of all responsibilities,
         liabilities and benefits relating to or affecting Taxes (as
         hereinafter defined) paid or payable by either of them for all
         taxable periods, whether beginning before, on or after the
         Distribution Date (as hereinafter defined) and to provide for
         certain other matters.

                   NOW, THEREFORE, in consideration of the premises, and
         of the representations, warranties, covenants and agreements set
         forth herein, the parties hereto hereby agree as follows:


                                     ARTICLE I.

                                    DEFINITIONS

                   Capitalized terms used but not defined herein shall
         have the respective meanings assigned to them in the Distribution
         Agreement or the Merger Agreement.  As used in this Agreement,
         the following terms shall have the following meanings (such
         meanings to be equally applicable to both the singular and the
         plural forms of the terms defined):

                   "Action":  as defined in Section 5.3(a).

                   "Active New Grace Businesses":  as defined in Section
         5.2(b).

                   "Active Packo Business":  as defined in Section 5.1(b).




                   "Adjusted Item":  as defined in Section 3.2(a)(v).

                   "Adjusted Party" means the party for the account of
         which is an Adjusted Item.

                   "Affiliated Group" means the affiliated group of which
         Grace is the common parent or any predecessor or successor
         thereto.

                   "Code" means the Internal Revenue Code of 1986, as
         amended, and shall include corresponding provisions of any
         subsequently enacted federal tax laws.

                   "Conn Prepared Returns":  as defined in Section 2.2(a).

                   "Conn Prior Payments":  as defined in Section
         3.2(c)(iii).

                   "Consistency/Basis Disagreement":  as defined in
         Section 2.2(b).

                   "Corresponding Item":  as defined in Section 3.2(a)(v).

                   "Corresponding Party" means the party for the account
         of which is a Corresponding Item.

                   "Del Prepared Returns":  as defined in Section 2.2(a).

                   "Discontinued Businesses":  shall mean (x) the can
         sealing and coating portion of the New Grace Business which
         portion is described in the proviso to the definition of the
         Packaging Business and (y) certain other businesses currently
         accounted for as discontinued operations.

                   "Distribution Date" means the date on which the
         Distribution occurs.  For purposes of this Agreement, the
         Distribution shall be deemed effective as of the close of
         business on the Distribution Date.

                   "Equity Securities" means any stock or other equity
         securities treated as stock for tax purposes, or options,
         warrants, rights, convertible debt, or any other instrument or
         security that affords any Person the right, whether conditional
         or otherwise, to acquire stock.

                   "Final Determination" means the final resolution of
         liability for any Tax for a taxable period (i) by a duly executed
         IRS Form 870 or 870-AD (or any successor forms thereto), on the
         date such Form is effective, or by a comparable form under the
         laws of other jurisdictions; except that a Form 870 or 870-AD or
         comparable form that reserves (whether by its terms or by
         operation of law) the right of the taxpayer to file a claim for
         refund and/or the right of the taxing authority to assert a
         further deficiency shall not constitute a Final Determination


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         with respect to the right so reserved; (ii) by a decision,
         judgment, decree, or other order by a court of competent
         jurisdiction, which has become final and unappealable; (iii) by a
         closing agreement or accepted offer in compromise under Section
         7121 or 7122 of the Code, or comparable agreements under the laws
         of other jurisdictions; (iv) by any allowance of a refund or
         credit in respect of an overpayment of Tax, but only after the
         expiration of all periods during which such refund may be
         recovered (including by way of offset) by the jurisdiction
         imposing Tax; or (v) by any other final disposition, including by
         reason of the expiration of the applicable statute of limitations
         or by mutual agreement of the parties.

                   "Foreign Cap" shall mean $3 million.

                   "Foreign Packco Subsidiary" means a Packco Subsidiary
         organized in a foreign jurisdiction.

                   "Foreign Packco Tax Item" means a Tax Item of a Foreign
         Packco Subsidiary arising in the Pre-Distribution Period
         attributable to the Packaging Business conducted by such
         Subsidiary other than any Tax Item of a Foreign Packco Subsidiary
         arising as a result of a Foreign Transfer.

                   "Foreign New Grace Subsidiary" means a New Grace
         Subsidiary organized in a foreign jurisdiction.

                   "Forwarding Party":  as defined in Section 4.1.

                   "Forwarding Responsibilities":  as defined in Section
         4.1.

                   "Hypothetical Pre-Distribution Tax":  as defined in
         Section 2.2(d).

                   "Hypothetical Pre-Distribution Overall Tax Benefit":
         as defined in Section 2.2(d).

                   "Indemnified Amount":  as defined in Section 4.1.

                   "Indemnitee":  as defined in Section 4.2(a).

                   "Indemnitor":  as defined in Section 4.2(a).

                   "Indemnity Issue":  as defined in Section 4.2(a).

                   "Interest":  as defined under "Taxes" below.

                   "IRS" means the Internal Revenue Service.

                   "New Grace Tax Item" means a Tax Item arising in the
         Pre-Distribution Period attributable to (i) New Grace, Grace-
         Conn., Packco, any Foreign New Grace Subsidiary, any member of
         the Affiliated Group which was a member prior to the Distribution


                                       -3-




         Date or any member of the affiliated group for United States
         federal income tax purposes of which W. R. Grace & Co., a New
         York corporation, was the common parent or (ii) the New Grace
         Business conducted by any Foreign Packco Subsidiary.

                   "Overall Tax Benefit" shall mean, for any taxable
         period, the net operating loss, unused credits (taking into
         account foreign tax credits when realized regardless of the
         period for which the associated earnings and profits were earned)
         and any other aggregate net unused Tax Benefit not used to reduce
         Taxes for the period. 

                   "Packco Prior Payments":  as defined in Section
         3.2(c)(iii).

                   "Packaging Tax Item" means a Tax Item attributable to
         Sealed Air, any member of the Packco Group or otherwise relating
         to the Packaging Business or the Packaging Assets that is not a
         New Grace Tax Item or a Foreign Packco Tax Item.

                   "Payee":  as defined in Section 3.2(c).

                   "Payor":  as defined in Section 3.2(c).

                   "Post-Distribution Period" means the Post-Distribution
         Taxable Periods and the portion of any Straddle Period beginning
         on the date after the Distribution Date.

                   "Post-Distribution Taxable Period" means any taxable
         period beginning after the Distribution Date.

                   "Pre-Distribution Period" means the Pre-Distribution
         Taxable Periods and the portion of any Straddle Period ending on
         the Distribution Date. 

                   "Pre-Distribution Schedules":  as defined in Section
         2.2(b).

                   "Pre-Distribution Taxable Period" means any taxable
         period ending on or before the Distribution Date

                   "Proceeding" shall mean any audit or other examination,
         judicial or administrative proceeding relating to liability for
         or refunds or adjustments with respect to Taxes.  

                   "Recipient Group":  as defined in Section 4.1.

                   "Restriction Period" means the period beginning on the
         date hereof and ending on the two-year anniversary of the
         Effective Time.

                   "Reviewing Party":  as defined in Section 5.3(c).

                   "Ruling/Opinion Exception":  as defined in Section 5.1.


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                   "Sealed Air Parties" means Sealed Air and each of its
         past, present or future Affiliates, other than any member of the
         Packco Group.

                   "Straddle Period" means a taxable period that includes,
         but does not end on, the Distribution Date.

                   "Substantial Authority":  as defined in Section 2.1.

                   "Tax Benefit" means any item of loss, deduction, credit
         or any other Tax Item which decreases Taxes paid or payable.

                   "Tax Deficiency" means an assessment of Taxes, as a
         result of a Final Determination.

                   "Tax Detriment" means any item of income, gain,
         recapture of credit or any other Tax Item which increases Taxes
         paid or payable.

                   "Tax-Free Status" means the qualification of the
         Distribution (i) as a transaction described in Section 355(a)(1)
         of the Code, (ii) as a transaction in which the stock distributed
         thereby is qualified property for purposes of Section 355(c)(2)
         of the Code and (iii) as a transaction in which each of Grace,
         Grace-Conn., Packco, New Grace and each member of the New Grace
         Group recognizes no income or gain.

                   "Tax Item" means any item of income, gain, loss,
         deduction, credit, recapture of credit or any other item which
         increases or decreases Taxes paid or payable, including an
         adjustment under Code Section 481 resulting from a change in
         accounting method.

                   "Tax Opinions" shall mean the Grace Tax Opinion and the
         Sealed Air Tax Opinion.

                   "Tax Refund" means a refund of Taxes as the result of a
         Final Determination.

                   "Tax Return" means any return, filing, questionnaire,
         information return or other document required to be filed,
         including requests for extensions of time, filings made with
         estimated tax payments, claims for refund and amended returns
         that may be filed, for any period with any taxing authority
         (whether domestic or foreign) in connection with any Tax or Taxes
         (whether or not a payment is required to be made with respect to
         such filing).

                   "Taxes" means all forms of taxation, whenever created
         or imposed, and whether of the United States or elsewhere, and
         whether imposed by a local, municipal, governmental, state,
         foreign, federation or other body, and, without limiting the
         generality of the foregoing, shall include income, sales, use, ad
         valorem, gross receipts, trade, license, value added, franchise, 


                                       -5-




         transfer, recording, withholding, payroll, employment, excise,
         occupation, unemployment insurance, social security, business
         license, business organization, stamp, environmental, premium and
         property taxes, together with any related interest, penalties and
         additions to any such tax, or additional amounts imposed by any
         taxing authority (domestic or foreign) (such interest, penalties,
         additions and additional amounts, "Interest").

                   "Transaction Party":  as defined in Section 5.3(c).


                                    ARTICLE II.

                               FILING OF TAX RETURNS

                   Section 2.1.  Manner of Filing.  All Tax Returns filed
         after the Distribution Date and the Pre-Distribution Schedules
         shall be prepared on a basis which is consistent with the
         consummation of the transactions as set forth in the Distribution
         Agreement, the Grace Tax Matters Certificate, the Sealed Air Tax
         Matters Certificate, the Tax Opinions and any opinions, rulings,
         agreements or written advice relating to Foreign Transfers (in
         the absence of a controlling change in law or circumstances) and
         shall be filed on a timely basis (including extensions) by the
         party responsible for such filing under this Agreement.  The Pre-
         Distribution Schedules and all Tax Returns in respect of a Pre-
         Distribution Taxable Period or portion, ending on the
         Distribution Date of any Straddle Period, that include any member
         of the New Grace Group or the Packco Group shall be prepared on
         the basis of substantial authority or on a reasonable basis with
         (if applicable) appropriate disclosure (each, "Substantial
         Authority"); provided, however, that such Schedules and Returns
         shall be prepared on a basis consistent with the elections (other
         than elections relating to carrybacks and carryforwards described
         in Section 3.3(a)), accounting methods, conventions and
         principles of taxation used for the most recent taxable periods
         of members of the New Grace Group for which Tax Returns involving
         similar Tax Items have been filed, to the extent that a failure
         to do so would result in a Tax Detriment, or a reduction in a Tax
         Benefit, to a member of the Packco Group, as long as such
         consistent position has Substantial Authority.  All Tax Returns
         in respect of a Post-Distribution Taxable Period or portion,
         beginning after the Distribution Date, of any Straddle Period,
         shall be prepared with Substantial Authority; provided, however,
         that such Returns shall be prepared on a basis consistent with
         the elections (other than elections relating to carrybacks and
         carryforwards described in Section 3.3(a)), accounting methods,
         conventions and principles of taxation used for the most recent
         taxable periods of members of the New Grace Group for which Tax
         Returns involving similar Tax Items have been filed, to the
         extent that a failure to do so would result in a Tax Detriment,
         or a reduction in a Tax Benefit, to a member of the other Group,
         as long as such consistent position has Substantial Authority.
         In the event of a conflict with respect to a Straddle Period
         between the requirements of the immediately preceding sentence

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         and the second preceding sentence, the second preceding sentence
         shall prevail.  Subject to the provisions of this Agreement, all
         decisions relating to the preparation of Tax Returns shall be
         made in the sole discretion of the party responsible under this
         Agreement for such preparation.  Grace shall provide Grace-Conn.
         with copies of all Tax Returns filed after the Distribution Date
         that relate to any member of the New Grace Group.  Grace-Conn.
         shall provide Grace with a copy of any portion of a Tax Return
         necessary to confirm Grace-Conn.'s entitlement to payment
         hereunder in respect of a carryback or refund.

                   Section 2.2.  Pre-Distribution and Straddle Period Tax
         Returns.

                   (a)  Grace shall prepare and file, or cause to be
         prepared and filed, any Tax Returns required to be filed by a
         member or members of the New Grace Group or the Packco Group for
         any Pre-Distribution Taxable Period and any Straddle Period;
         provided, however, that Grace-Conn. shall prepare and file, or
         cause to be prepared and filed, any Tax Returns relating solely
         to a member or members of the New Grace Group or their respective
         assets or businesses (such Tax Returns to be prepared and filed,
         or caused to be prepared and filed, by Grace, the "Del Prepared
         Returns", and by Grace-Conn., the "Conn Prepared Returns",
         respectively).  

                   (b)  With respect to any Del Prepared Return that has
         not been filed as of the Distribution Date and relates to a Pre-
         Distribution Taxable Period or a Straddle Period, Grace-Conn.
         shall, 25 calendar days before the due date (including
         extensions) for such Return, provide Grace with a schedule
         (collectively, the "Pre-Distribution Schedules") detailing the
         computation of (i) in the case of a Pre-Distribution Taxable
         Period, the Tax and/or Overall Tax Benefit and (ii) in the case
         of a Straddle Period, the Hypothetical Pre-Distribution Tax and/
         or Hypothetical Pre-Distribution Overall Tax Benefit, in either
         case, attributable to the member or members of the New Grace
         Group or the Packco Group included in such Return.  Any Pre-
         Distribution Schedule relating to a Pre-Distribution Taxable
         Period shall be delivered to Grace in the form of a completed,
         but unexecuted Tax Return.  If Grace so requests, Grace-Conn.
         shall discuss with Grace the preparation of, and allow Grace
         periodically to review major issues with respect to, any Pre-
         Distribution Schedule.  In the event that Grace disagrees with
         any Tax Item reflected (or anticipated to be reflected) on a Pre-
         Distribution Schedule and demonstrates (by means of a written
         explanation in sufficient detail to permit such conclusion to be
         verified) its conclusion that Grace-Conn. has failed to comply
         with the requirements of the second sentence of Section 2.1
         hereof (a "Consistency/Basis Disagreement"), Grace-Conn. shall
         explain its calculation of such Tax Item within 14 days of
         receipt of Grace's written explanation.  The parties shall
         attempt in good faith mutually to resolve any Consistency/Basis 



                                       -7-




         Disagreements prior to the due date for filing the relevant Tax
         Return.

                   (c)  Whether or not any Consistency/Basis Disagreements
         or any other disagreements relating to a Tax Item on a Pre-
         Distribution Schedule have been resolved by the applicable due
         date, Grace shall (i) prepare the Del Prepared Returns on the
         basis of, and in a manner consistent with, the Pre-Distribution
         Schedules, (ii) provide Grace-Conn. with a copy of each Del
         Prepared Return 14 calendar days before such Return is filed and
         reflect any comments thereon provided in good faith by Grace-
         Conn. and (iii) provide Grace-Conn. with a copy of each Del
         Prepared Return two business days after such Return is filed.  In
         the event that any Consistency/Basis Disagreements relating to a
         Pre-Distribution Schedule have not been resolved prior to the
         filing of the relevant Tax Return, such disagreements shall be
         promptly resolved pursuant to Section 6.7 hereof.

                   (d)  The "Hypothetical Pre-Distribution Tax" shall mean
         the Tax that would have been due for the taxable period ending on
         the Distribution Date if the Distribution Date were the last day
         of the taxable period.  The "Hypothetical Pre-Distribution
         Overall Tax Benefit" shall mean the Overall Tax Benefit that
         would have arisen in the taxable period ending on the
         Distribution Date if the Distribution Date were the last day of
         the taxable period.  Such Tax or Overall Tax Benefit shall be
         computed by determining items of income, expense, deduction, loss
         and credit on a "closing of the books" basis, reflecting tax
         accounting principles as of the close of business on the
         Distribution Date. 

                   Section 2.3.  Post-Distribution Tax Returns.  Any Tax
         Return for a Post-Distribution Taxable Period shall be the
         responsibility of the New Grace Group if such Tax Return relates
         solely to a member or members of the New Grace Group or their
         respective assets or businesses, and shall be the responsibility
         of the Packco Group if such Tax Return relates solely to a member
         or members of the Packco Group or Sealed Air or their respective
         assets or businesses.


                                    ARTICLE III.

                                  PAYMENT OF TAXES

                   Section 3.1.  Allocation of Tax Liabilities With
         Respect to Unfiled Returns.

                   (a)  All Taxes shall be paid by the party responsible
         under this Agreement for filing the Tax Return pursuant to which
         such Taxes are due; provided, however, that

                        (i)  in the case of Taxes due with respect to Del
         Prepared Returns for Pre-Distribution Taxable Periods or Straddle
         Periods, Grace-Conn. shall pay Grace the amount, if any,

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         of the Tax or Hypothetical Pre-Distribution Tax, as the case may
         be, if any, reflected in the Pre-Distribution Schedule relating
         to such Tax Return attributable to the member or members of the
         New Grace Group or the Packco Group included in such Return.
         Such payment shall be made, at Grace-Conn.'s discretion, either
         in immediately available funds on the morning of the relevant
         date when payment is due to the governmental authority in respect
         of such Tax Return or, if not in immediately available funds, two
         business days prior to such due date.  Grace shall forward any
         such payment that it receives from Grace-Conn. to the appropriate
         taxing authority.

                        (ii)  in the case of Del Prepared Returns for any
         taxable period, on the relevant date on which payment is due (or
         a refund is received) in respect of such Tax Return, Grace shall
         pay Grace-Conn. the amount, if any, of the actual reduction in
         Taxes, or the actual increase in the Tax refund, that would have
         been payable or receivable with respect to such Tax Return but
         for any Overall Tax Benefit (or Hypothetical Pre-Distribution Tax
         Benefit) that is for the account of Grace-Conn. under Section
         3.2(a)(iii), below.  In the case of a payment by Grace in respect
         of a reduction in Taxes, such payment shall be made in
         immediately available funds on the morning of the relevant due
         date or, if not in immediately available funds, two business days
         prior to the due date.

                        (iii)  the parties intend that, in implementing
         this Section 3.1(a), payment and reimbursement between the
         parties shall reflect the principles of Section 3.2(a).

                   (b)  Notwithstanding anything to the contrary, any Tax
         Item resulting from any act or omission not in the ordinary
         course of business (other than transactions contemplated by this
         Agreement, the Distribution Agreement, the Merger Agreement or
         the Benefits Agreement) on the part of any member of the Packco
         Group or any of the Sealed Air Parties occurring on the
         Distribution Date after the Effective Time shall be deemed to
         arise in a taxable period which begins after the Distribution
         Date.

                   Section 3.2.  Indemnities; Redetermined Tax
         Liabilities.  Except as otherwise provided in Article V:  

                   (a)  Indemnities.

                        (i)  Grace-Conn. shall be responsible for (w) any
         Tax for a Pre-Distribution Taxable Period (and any Hypothetical
         Pre-Distribution Tax for a Straddle Period) of Grace, Grace-
         Conn., Packco, any Foreign New Grace Subsidiary, any current or
         former member of the Affiliated Group which was a member prior to
         the Distribution Date or any current or former member of the
         affiliated group for United States federal income tax purposes of
         which W. R. Grace & Co., a New York corporation,



                                       -9-




         was the common parent, (x) any Tax for a Pre-Distribution Taxable
         Period (and any Hypothetical Pre-Distribution Tax for a Straddle
         Period) of a Foreign Packco Subsidiary attributable to the
         Packaging Business reflected on a Tax Return filed by such
         Subsidiary on or before the Distribution Date or on a Pre-
         Distribution Schedule, (y) any Tax of any member of the New Grace
         Group or a Foreign Packco Subsidiary, in either case, to the
         extent attributable to the New Grace Business and (z) 75% (or if
         the Packco Group has borne an amount of Tax in respect of
         adjustments to Foreign Packco Tax Items (and fees and expenses in
         Proceedings relating to such adjustments) that exceeds the
         Foreign Cap, then 100%) of any increase in Tax of a member of the
         Packco Group attributable to an adjustment to a Foreign Packco
         Tax Item.

                        (ii)  Grace shall be responsible for any Taxes (x)
         of any member of the Packco Group or otherwise relating to the
         Packaging Business or the Packaging Assets (except to the extent
         that Grace-Conn. is responsible for such Taxes pursuant to clause
         (i) above) and (y) of any of the Sealed Air Parties, whether
         arising before, on or after the Distribution Date.

                        (iii)  Any Overall Tax Benefit (or Hypothetical
         Pre-Distribution Overall Tax Benefit) shall be for the account of
         Grace-Conn. to the extent that such Overall Tax Benefit (or
         Hypothetical Pre-Distribution Overall Tax Benefit) is
         attributable to (w) Grace, Grace-Conn., Packco, any Foreign New
         Grace Subsidiary, any current or former member of the Affiliated
         Group which was a member prior to the Distribution Date or any
         current or former member of the affiliated group for United
         States federal income tax purposes of which W. R. Grace & Co., a
         New York corporation, was the common parent, in each case, for
         the Pre-Distribution Period, (x) the Packaging Business of a
         Foreign Packco Subsidiary for the Pre-Distribution Period
         reflected on a Tax Return filed by such Subsidiary on or before
         the Distribution Date or on a Pre-Distribution Schedule (other
         than the Foreign NOLs), (y) a Pre-Distribution Period of any
         member of the New Grace Group or a Foreign Packco Subsidiary, in
         either case, to the extent attributable to the New Grace Business
         (other than the Foreign NOLs) or (z) any adjustment to a Foreign
         Packco Tax Item.

                        (iv)  For purposes of determining the amount for
         which Grace or Grace-Conn. is responsible for paying the other
         party, or entitled to receive from the other party, in the event
         of any adjustment, including a Final Determination, of a Tax Item
         of a Foreign Packaging Subsidiary (other than a Tax Item that
         arises as a result of a Foreign Transfer), Tax Items that are
         clearly attributable to the Packaging Business or the New Grace
         Business, respectively, shall be allocated to such Business and
         Tax Items that are not so attributable shall be allocated in the
         proportion that the earnings from operations of such Business
         operated by such Subsidiary bears to the total earnings from
         operations of such Subsidiary, as reflected in audited financial


                                      -10-




         statements for the most recent, as of the end of such taxable
         period, full-year accounting period.  Tax Items so allocated
         shall be treated for all purposes of this Agreement as
         attributable to the Business to which they are allocated.

                        (v)  Timing Adjustments.  In the event of any
         adjustment, including a Final Determination, of a Tax Item (the
         "Adjusted Item") which results in a Tax Benefit or Tax Detriment
         for the account of one party and a corresponding Tax Detriment or
         Tax Benefit (the "Corresponding Item") for the account of the
         other party, then (I) if the Corresponding Item is a Tax Benefit,
         the Corresponding Party shall pay the Adjusted Party and (II) if
         the Corresponding Item is a Tax Detriment, the Adjusted Party
         shall pay the Corresponding Party, in either case, for each
         taxable period in which a member of the Group of the party
         entitled to payment under this Section 3.2(a)(v) actually
         realizes the Tax Benefit, in the case of (I), or the Tax
         Detriment, in the case of (II), by reason of the adjustment, an
         amount equal to such realized Tax Benefit, in the case of (I), or
         realized Tax Detriment, in the case of (II), including interest
         (computed at a 5% annual rate) from the original due date
         (without extensions) for filing of the Return for such taxable
         period through the date of payment under this Section 3.2(a)(v).

                   (b)  Final Determinations.  In the case of any Final
         Determination regarding a Tax Return, any Tax Deficiency shall be
         paid to the appropriate taxing authority by, and any Tax Refund
         received from the appropriate taxing authority shall be paid to,
         the party which filed such Return; provided, however, that
         whether or not there is a Tax Deficiency or Tax Refund and
         whether or not a payment is required to or from the appropriate
         taxing authority, Grace shall make payments to, or receive
         payments from, Grace-Conn. based upon the following principles:

                        (i)  Grace-Conn. shall make a payment to Grace in
         an amount equal to (x) any increase in the Tax of any of the
         Sealed Air Parties or any member of the Packco Group resulting
         from any adjustment to a New Grace Tax Item and (y) 75% (or, if
         the Packco Group has borne an amount of Tax in respect of
         adjustments to Foreign Packco Tax Items (and fees and expenses in
         Proceedings relating to such adjustments) that exceeds the
         Foreign Cap, then 100%) of any increase in the Tax of any of the
         Sealed Air Parties or any member of the Packco Group resulting
         from any adjustment to a Foreign Packco Tax Item, in either case
         (x) or (y), together with any Interest relating thereto that is
         or has been imposed by the relevant taxing authority (or would
         have been imposed but for an offsetting Packaging Tax Item).

                        (ii)  Grace shall pay to Grace-Conn. an amount
         equal to (x) any decrease in the Tax of any of the Sealed Air
         Parties or any member of the Packco Group resulting from any
         adjustment to a New Grace Tax Item and (y) any decrease in the
         Tax of any of the Sealed Air Parties or any member of the Packco
         Group resulting from any adjustment to a Foreign Packco Tax Item,


                                      -11-




         in either case (x) or (y), together with any Interest relating
         thereto that is or has been paid by the relevant taxing authority
         (or would have been paid but for an offsetting Packaging Tax
         Item).

                        (iii)  The parties intend that, in implementing
         this Section 3.2(b), payment and reimbursement between the
         parties shall reflect the principles of Section 3.2(a).

                        (iv)  Payments otherwise required to be made under
         this Section 3.2(b) with respect to a single Final Determination
         shall be netted and offset against each other so that either
         Grace shall make a payment to Grace-Conn. or Grace-Conn. shall
         make a payment to Grace, but not both.

                   (c)  Calculation and Payment of Amounts.  

                        (i)  All calculations and determinations required
         to be made pursuant to this Article III shall initially be made
         by the party obligated to make such payment (the "Payor") in its
         good faith.  If the party entitled to receive a payment (the
         "Payee") so requests, the Payor shall present its calculations
         and determinations to the Payee in writing.  The Payee shall be
         deemed to consent to such calculations and determinations unless
         the Payee notifies the Payor in writing within 30 days of
         receiving such calculations and determinations.  If the Payee
         disagrees with the Payor's calculations and determinations, the
         parties shall attempt in good faith mutually to resolve the
         disagreement.  In the event that they cannot so resolve the
         disagreement, it shall be resolved promptly pursuant to Section
         6.7 hereof.

                        (ii)  For all tax purposes, the parties hereto
         agree to treat, and to cause their respect affiliates to treat,
         (x) any payment required to be paid to a member of the other
         Group by this Agreement as an adjustment to the portion of the
         New Grace Capital Contribution that is contributed from Grace to
         New Grace and (ii) any payment of interest or Taxes (other than
         U.S. Federal income taxes) by or to a taxing authority as taxable
         or deductible, as the case may be, to the party entitled under
         this Agreement to retain such payment or required under this
         Agreement to make such payment, in either case except as
         otherwise mandated by the law or a Final Determination.  In the
         event of such a Final Determination, the payment in question
         shall be adjusted to place the parties in the same after-tax
         position that they would have enjoyed absent such Final
         Determination.  Any payment required by this Agreement that is
         not made on or before the date required hereunder shall bear
         interest, from and after such date through the date of payment,
         at the appropriate market interest rate.

                        (iii)  Payment of any amount required to be made
         pursuant to this Article III as a result of a Final



                                      -12-




         Determination shall become due and payable after such Final
         Determination has been made within ten business days of the
         receipt of written notice from the party entitled to receive such
         payment to the party required to make such payment.  Any amounts
         required to be paid in respect of Taxes or Overall Tax Benefits
         pursuant to this Article III shall be adjusted to avoid
         duplication of payments and to take into account the sum of any
         payments previously made by any member of the Packco Group on or
         prior to the Distribution Date or by Grace-Conn. or any other
         member of the New Grace Group at any time in respect of such
         Taxes or Overall Tax Benefits (the "Conn Prior Payments") and the
         sum of any payments previously made by any member of the Packco
         Group after the Distribution Date in respect of such Taxes or
         Overall Tax Benefits (the "Packco Prior Payments").  Appropriate
         payments will be made between the parties in the event that the
         Conn Prior Payments or the Packco Prior Payments, respectively,
         exceed the amounts for which Grace-Conn. or Packco, respectively,
         is responsible under the principles of Section 3.2(a).

                   (d)  Other Tax Liabilities and Refunds.  Any Tax or Tax
         refund that is not otherwise covered by Section 3.1 or 3.2(b)
         shall be allocated, and payment shall be made by Grace-Conn. or
         Grace, using the principles of Sections 3.2(a); provided,
         however, that any Tax refund (whether or not governed by Section
         3.1 or 3.2(b)) arising as a result of an adjustment of a Foreign
         Packco Tax Item shall be allocated in the same manner and to the
         same extent as Taxes and expenses in respect of adjustments of
         Foreign Packco Tax Items have been borne (it being agreed and
         understood that to the extent that the Foreign Cap has been
         exceeded, such refund shall be entirely for the benefit of Grace-
         Conn. and to the extent that refunds are shared 75% by Grace-
         Conn. and 25% by Grace the Foreign Cap shall be increased by the
         amount refunded to Grace).  Any Tax refund received by one party
         that is for the account of the other party shall be paid to such
         other party promptly upon receipt thereof.  Any Tax paid by one
         party that is the responsibility of the other party shall be
         reimbursed promptly by the other party.

                   Section 3.3.  Carrybacks and Refund Claims.  (a)  Any
         Tax refund resulting from the carryback by any member of the New
         Grace Group of any Tax Item arising after the Distribution Date
         to a Pre-Distribution Taxable Period or a Straddle Period shall
         be for the account of Grace-Conn., and Grace shall promptly pay
         over to Grace-Conn. any such Tax refund that it receives.  In the
         event that a member of the New Grace Group, on the one hand, and
         a member of the Packco Group or a Sealed Air Party, on the other
         hand, are each entitled to carryback a Tax Item to a Pre-
         Distribution Taxable Period or a Straddle Period, the respective
         Tax Items shall be utilized under the rules of applicable law
         (which shall be, in the case of carrybacks to such periods of the
         Affiliated Group and carrybacks under foreign or State law with
         respect to which there is no applicable rule regarding the
         priority of such utilization, the rules contained in Treasury
         Regulation Section 1.1502-21T).  Any election affecting the
         carryback

                                      -13-




         or carryforward of any Tax Item of any member of the New Grace
         Group, or a payment to or by such a member under this Agreement
         in respect of a carryback or carryforward, including the
         elections under Section 172(b)(3) of the Code and Treasury
         Regulation Sections 1.1502-21T(b)(3) and 1.172-13(c) with respect
         to the taxable years of the Affiliated Group that begin on each
         of January 1, 1997, and January 1, 1998, shall not be made
         without the consent of Grace-Conn. and shall be made if Grace-
         Conn. so requests.

                   (b)  Grace-Conn. shall be permitted to file, and Grace
         shall fully cooperate with Grace-Conn. in connection with, any
         refund claim.  To the extent that such a refund claim (other than
         a claim arising from a carryback) does not result in a Tax refund
         (or would not result in a refund if a claim were filed) as the
         result of an offsetting Packaging Tax Item (including a Packaging
         Tax Item carried back to a Pre-Distribution Taxable Period or a
         Straddle Period), Grace shall remit to Grace-Conn. the amount of
         any decrease in Tax that results or would have resulted from such
         refund claim.

                   Section 3.4.  Liability for Taxes with Respect to Post-
         Distribution Periods.  Unless otherwise specifically provided in
         this Agreement or the Distribution Agreement, the New Grace Group
         shall pay all Taxes and shall be entitled to receive and retain
         all refunds of Taxes with respect to periods beginning after the
         Distribution Date which are attributable to the New Grace
         Business.  Unless otherwise provided in this Agreement, the
         Packco Group shall pay all Taxes and shall be entitled to receive
         and retain all refunds of Taxes with respect to periods beginning
         after the Distribution Date which are attributable to the
         Packaging Business.


                                    ARTICLE IV.

                 INDEMNITY, COOPERATION AND EXCHANGE OF INFORMATION

                   Section 4.1.  Breach.  Grace-Conn. shall be liable for
         and shall indemnify, defend and hold harmless the Packco
         Indemnitees from and against, and Grace shall be liable for and
         shall indemnify, defend and hold harmless the New Grace
         Indemnitees from and against, any payment required to be made as
         a result of the breach by a member of the New Grace Group or the
         Packco Group, respectively, of any obligation under this
         Agreement.  If any member of the Packco Group or the New Grace
         Group, fails to comply in any respect whatsoever with any of its
         responsibilities under this Agreement relating to promptly
         forwarding to any member of the other Group (the "Recipient
         Group") any communications with and refunds received from any
         taxing authority ("Forwarding Responsibilities"), then Grace or
         Grace-Conn., as the case may be, (the "Forwarding Party") shall
         be liable for and shall indemnify and hold the New Grace
         Indemnitees or the Packco Indemnitees, as the case may be,
         harmless from and against any costs or expenses (including,

                                      -14-




         without limitation, Taxes and reasonably incurred lawyers' and
         accountants' fees) ("Indemnified Amount") incurred by or imposed
         upon any member of the Recipient Group arising out of, in
         connection with or relating to such communication; provided,
         however, that the liability of the Forwarding Party with respect
         to any one such failure shall be equal to that portion of the
         Indemnified Amount that a member of the Recipient Group
         demonstrates is caused (directly or indirectly) by such failure.  

                   Section 4.2.  Contests.  (a)  Whenever a party hereto
         (the "Indemnitee") becomes aware of the existence of an issue
         that could increase the liability for any Tax, or decrease the
         amount of any refund, of the other party hereto or any member of
         its Group or require a payment hereunder (an "Indemnity Issue"),
         the Indemnitee shall in good faith promptly give notice to such
         other party (the "Indemnitor") of such Indemnity Issue.  The
         failure of any Indemnitee to give such notice shall not relieve
         any Indemnitor of its obligations under this Agreement, except to
         the extent that such Indemnitor or its affiliate is actually
         materially prejudiced by such failure to give notice.  

                   (b)  The Indemnitor and its representatives, at the
         Indemnitor's expense, shall be entitled to participate (i) in all
         conferences, meetings or proceedings with any taxing authority,
         the subject matter of which is or includes an Indemnity Issue in
         respect of a Pre-Distribution Period and (ii) in all appearances
         before any court, the subject matter of which is or includes an
         Indemnity Issue in respect of a Pre-Distribution Period.

                   (c)  Except as provided in Section 4.2(d), Grace-Conn.
         shall have the right to decide as between the parties hereto how
         any Indemnity Issue for a Pre-Distribution Taxable Period is to
         be dealt with and finally resolved with the appropriate taxing
         authority and shall control all Proceedings relating thereto.
         Grace agrees to cooperate with Grace-Conn. in the settlement of
         any such Indemnity Issue; provided, however, that Grace-Conn.
         shall act in good faith in the conduct of such Proceedings and
         shall keep Grace reasonably informed of any developments which
         can reasonably be expected to affect adversely Grace.  Such
         cooperation shall include permitting Grace-Conn. to litigate or
         otherwise resolve any such Indemnity Issue.  It is expressly the
         intention of the parties to this Agreement to take, and the
         parties shall take, all actions necessary to establish Grace-
         Conn. as the sole agent for Tax purposes of each member of the
         Affiliated Group, as if Grace-Conn. were the common parent of the
         Affiliated Group, with respect to all combined, consolidated and
         unitary Tax Returns of the Affiliated Group for the Pre-
         Distribution Taxable Periods. 

                   (d)  The parties jointly shall represent the interests
         of (i) the Affiliated Group in any Proceeding relating to any
         Straddle Period and (ii) any Foreign Packco Subsidiary in any
         Proceeding relating to any taxable period that involves an
         Indemnity Issue.  Neither party shall settle any dispute relating


                                      -15-




         to any such period without the consent of the other party (which
         consent shall not be unreasonably withheld); provided, however,
         that if either party proposes a settlement and the other party
         does not consent thereto, the nonconsenting party shall assume
         control of the Proceeding (and bear all subsequently incurred
         costs, fees and expenses relating thereto) and the respective
         liabilities of the parties shall be determined pursuant to
         Section 6.7 based on the magnitude and likelihood of success of
         the issues involved in the Proceeding, the reasonableness of the
         settlement offer, the expense of continuing the Proceeding and
         other relevant factors.  Any other disputes regarding the conduct
         or resolution of any such Proceeding shall be resolved pursuant
         to Section 6.7.  All costs, fees and expenses paid to third
         parties in the course of such Proceeding shall be borne by the
         parties in the same ratio as the ratio in which, pursuant to the
         terms of this Agreement, the parties would share the
         responsibility for payment of the Taxes asserted by the taxing
         authority in its claim or assessment if such claim or assessment
         were sustained in its entirety; provided, however, that in the
         event that any party hereto retains its own advisors or experts
         in connection with any Proceeding, the costs and expenses thereof
         shall be borne solely by such party.

                   Section 4.3.  Cooperation and Exchange of Information. 

                   (a)  Grace shall, and shall cause each appropriate
         member of the Packco Group to, prepare and submit to Grace-Conn.,
         as soon as practicable, but in no event later than the date that
         is 30 days after a request from Grace-Conn. (i) all information
         as Grace-Conn. shall reasonably request to enable Grace-Conn. to
         file any Conn Prepared Return or prepare any Pre-Distribution
         Schedule (which information shall be provided in the form and of
         the quality in which comparable information was provided prior to
         the Distribution) and (ii) any Del Prepared Return (including any
         amended return) for any year within the carryback or carryforward
         period for an Overall Tax Benefit or Hypothetical Pre-
         Distribution Overall Tax Benefit that is for the account of
         Grace-Conn. or for any year with respect to which Grace is
         entitled to a payment under Section 3.2(a)(v).  Grace-Conn. shall
         bear any out-of-pocket marginal expense paid by any member of the
         Packco Group in preparing and submitting such information in
         respect of a Pre-Distribution Schedule relating to a Pre-
         Distribution Taxable Period, and the parties shall share equally
         any such expenses in respect of a Pre-Distribution Schedule
         relating to a Straddle Period.

                   (b)  Each party on behalf of itself and each member of
         its Group, agrees to provide the other party and the members of
         such party's Group with such cooperation and information as the
         second party or its Group members shall reasonably request in
         connection with the preparation or filing of any Tax Return, Pre-
         Distribution Schedule or claim for refund not inconsistent with
         this Agreement or in conducting any Proceeding in respect of
         Taxes.  Such cooperation and information shall include, without


                                      -16-




         limitation, (i) execution and delivery of a power of attorney by
         Grace or any other member of the Packco Group to Grace-Conn. or
         another member of the New Grace Group or designation of an
         officer of Grace-Conn. or another member of the New Grace Group
         as an officer of Grace or any other member of the Packco Group
         for the purpose of signing Tax Returns, cashing refund checks and
         conducting Proceedings if Grace Conn. could not otherwise
         exercise its rights under this Agreement with respect to such
         Returns, refunds or Proceedings, (ii) promptly forwarding copies
         of appropriate notices and forms or other communications received
         from or sent to any taxing authority which relate to the
         Affiliated Group, the Packaging Business or the New Grace
         Business and (iii) providing copies of all relevant portions of
         Tax Returns, accompanying schedules, related workpapers,
         documents relating to rulings or other determinations by taxing
         authorities, including, without limitation, foreign taxing
         authorities, and records concerning the ownership and Tax basis
         of property, which either party may possess.  Each party shall
         make, and shall cause the members of the Packco Group to make,
         their employees and facilities available on a mutually convenient
         basis to provide explanation of any documents or information
         provided hereunder.

                   (c)  Grace and Grace-Conn. agree to retain all Tax
         Returns, related schedules and workpapers, and all material
         records and other documents as required under Section 6001 of the
         Code and the regulations promulgated thereunder relating thereto
         existing on the date hereof or created through the Distribution
         Date, until the expiration of the statute of limitations
         (including extensions) of the taxable years to which such Tax
         Returns and other documents relate and until the Final
         Determination of any payments which may be required in respect of
         such years under this Agreement.  Grace-Conn. and Grace agree to
         advise each other promptly of any such Final Determination.  Any
         information obtained under this Section shall be kept
         confidential, except as may be otherwise necessary in connection
         with the filing of Tax Returns or claims for refund or in
         conducting any audit or other proceeding.

                   (d)  If (i) any member of the Packco Group fails to
         provide any information requested pursuant to this Section 4.3(a)
         by the dates and in the manner specified in Section 4.3(a) hereof
         or (ii) with respect to information not requested pursuant to
         Section 4.3(a) hereof, any member of either Group fails to
         provide any information requested pursuant to this Section 4.3,
         within a reasonable period, then the requesting party shall have
         the right to engage a "Big Six" public accounting firm of its
         choice to gather such information.  Each party agrees upon two
         business days' notice, in the case of a failure to provide
         information pursuant to Section 4.3 hereof to permit any such
         "Big Six" public accounting firm full access to all appropriate
         records or other information in the possession of any member of
         the party's Group during reasonable business hours, and promptly 



                                      -17-




         to reimburse or pay directly all costs and expenses in connection
         with the engagement of such public accountants.

                   (e)  If any member of either Group supplies information
         pursuant to this Agreement and an officer of any member of the
         other Group signs a statement or other document under penalties
         of perjury in reliance upon the accuracy of such information and
         so requests, then a duly authorized officer of the member
         supplying such information shall certify, under penalties of
         perjury, the accuracy and completeness of the information so
         supplied.  Grace agrees to indemnify and hold harmless each New
         Grace Indemnitee, and Grace-Conn. agrees to indemnify and hold
         harmless each Packco Indemnitee, from and against any cost, fine,
         penalty or other expense of any kind attributable to the gross
         negligence or willful misconduct of a member of the Packco Group,
         or New Grace Group, as the case may be, in supplying a member of
         the other Group with inaccurate or incomplete information.


                                     ARTICLE V.

                       CERTAIN POST-DISTRIBUTION TRANSACTIONS


                   Section 5.1  Sealed Air and Packco Group Covenants. 

                   Unless, in the case of any of Sections 5.1(a) through
         (f) below, Grace has obtained a ruling letter from the IRS or an
         opinion of nationally recognized counsel to Grace, in either
         case, to the effect that, without material qualification, such
         act or omission will not adversely affect the federal income tax
         consequences of the Distribution to any of Grace, Grace-Conn. or
         the stockholders of Grace-Conn., as set forth in the Tax
         Opinions, and the substance of, and basis for, such conclusion in
         such ruling or opinion is reasonably satisfactory to Grace-Conn.
         in its good faith solely with regard to preserving the Tax-Free
         Status of the Distribution (the "Ruling/Opinion Exception"):

                   (a)  No Sealed Air Party at any time nor any member of
         the Packco Group at any time after the Effective Time shall take
         any action, or fail or omit to take any action, that would cause
         any representation made in the Sealed Air Tax Matters Certificate
         or the Grace Tax Matters Certificate to be untrue in a manner
         that would have an adverse effect on the Tax-Free Status of the
         Distribution.

                   (b)  Until the first day after the Restriction Period,
         the Packco Group shall continue the active conduct of the
         Packaging Business (the "Active Packco Business").  The Packco
         Group shall not liquidate, dispose of, or otherwise discontinue
         the conduct of any material portion of the Active Packco
         Business.  The Packco Group shall continue the active conduct of
         the Packaging Business primarily through officers and employees
         of the Packco Group (and not through independent contractors).

                   (c)  Until the first day after the Restriction Period,
                                      -18-




         no Sealed Air Party nor any member of the Packco Group shall sell
         or otherwise issue to any Person, or redeem or otherwise acquire
         from any Person (other than any member of the Packco Group), any
         Equity Securities of Grace or any other member of the Packco
         Group; provided, however, that purchases that, in the aggregate,
         meet the requirements of Section 4.05(1)(b) of Revenue Procedure
         96-30 shall not constitute a redemption or acquisition of stock
         of Grace for purposes of this Section 5.1(c).

                   (d)  Until the first day after the Restriction Period,
         no Sealed Air Party nor any member of the Packco Group shall (i)
         solicit any Person to make a tender offer for, or otherwise
         acquire or sell, the Equity Securities of Grace, (ii) participate
         in or support any unsolicited tender offer for, or other
         acquisition or disposition of, the Equity Securities of Grace or
         (iii) approve or otherwise permit any proposed business
         combination or any transaction which, in the case of (i), (ii) or
         (iii), individually or in the aggregate, together with the
         transactions contemplated under the Distribution Agreement, the
         Merger Agreement, the Benefits Agreement and this Agreement,
         results in one or more Persons acquiring (other than in
         acquisitions not taken into account for purposes of Section
         355(e)) directly or indirectly stock representing a 50 percent or
         greater interest (within the meaning of Section 355(e) of the
         Code) in Grace.  In addition, no Sealed Air Party nor any member
         of the Packco Group shall at any time, whether before or
         subsequent to the expiration of the Restriction Period, engage in
         any action described in clauses (i), (ii) or (iii) of the
         preceding sentence if it is pursuant to an arrangement negotiated
         (in whole or in part) prior to the Distribution, even if at the
         time of the Distribution it is subject to various conditions, nor
         shall any such Party or member take any action, or fail or omit
         to take any action, that would cause Section 355(d) or (e) to
         apply to the Distribution.

                   (e)  Until the first day after the Restriction Period,
         no Sealed Air Party nor the members of the Packco Group shall
         sell, transfer, or otherwise dispose of or agree to dispose of
         assets (including, for such purpose, any shares of capital stock
         of a Subsidiary) that, in the aggregate, constitute more than 60%
         of the gross assets of Packco, nor shall they sell, transfer, or
         otherwise dispose of or agree to dispose of assets (including,
         for such purpose, any shares of capital stock of a Subsidiary)
         that, in the aggregate, constitute more than 60% of the
         consolidated gross assets of the Packco Group.  The foregoing
         sentence shall not apply to sales, transfers, or dispositions of
         assets in the ordinary course of business.  The percentages of
         gross assets or consolidated gross assets of Packco or the Packco
         Group, as the case may be, sold, transferred, or otherwise
         disposed of, shall be based on the fair market value of the gross
         assets of Packco and the Packco Group as of the Effective Time,
         and for this purpose, the values set forth in the Packaging
         Business Disclosure Letter Balance Sheet shall be conclusive.  



                                      -19-




                   (f)  Until the first day after the Restriction Period,
         neither Packco nor its Subsidiaries shall voluntarily dissolve or
         liquidate or engage in any merger, consolidation or other re-
         organization.  The foregoing sentence shall not apply to
         transactions in which Packco acquires another corporation,
         limited liability company, limited partnership, general
         partner-ship or joint venture solely for cash or other
         consideration that is not Equity Securities.  Reorganizations of
         Packco with its Affiliates, and liquidations of Packco's
         Affiliates, are not subject to Section 5.1(b) or this Section
         5.1(f) to the extent not inconsistent with the structure
         necessary for the Distribution to qualify for Tax-Free Status.

                   (g)  Until the first day after the Restriction Period,
         Grace shall furnish Grace-Conn. with a copy of any ruling request
         that Sealed Air, Grace or any of their Affiliates may file with
         the IRS and any opinion received that relates to or otherwise
         reasonably could be expected to have an effect on the Tax-Free
         Status of the Distribution.

                   Section 5.2  New Grace Covenants.  

                   Unless, in the case of any of Sections 5.2(a) through
         (e) below, Grace-Conn. has obtained a ruling letter from the IRS
         or an opinion of nationally recognized counsel to Grace-Conn., in
         either case, to the effect that, without material qualification,
         such act or omission will not adversely affect the federal income
         tax consequences of the Distribution to any of Grace, Grace-Conn.
         or the stockholders of Grace-Conn., as set forth in the Tax
         Opinions, and the substance of, and basis for, such conclusion in
         such ruling or opinion is reasonably satisfactory to Grace in its
         good faith solely with regard to preserving the Tax-Free Status
         of the Distribution:

                   (a)  No member of the New Grace Group shall take any
         action, or fail or omit to take any action, that would cause any
         representation made in the Sealed Air Tax Matters Certificate or
         the Grace Tax Matters Certificate to be untrue in a manner that
         would have an adverse effect on the Tax-Free Status of the
         Distribution.

                   (b)  Until the first day after the Restriction Period,
         the New Grace Group shall continue the active conduct of one of
         the Active New Grace Businesses. "Active New Grace Businesses"
         shall mean each of the Grace Davison business and the Grace
         Construction Business.  The New Grace Group may dispose of,
         liquidate or discontinue the conduct of the Grace Davison
         business or the Grace Construction Products business if it
         actively continues the conduct of the other.  The New Grace Group
         shall continue the active conduct of at least one of the Active
         New Grace Businesses primarily through officers and employees of
         the New Grace Group (and not through independent contractors).

                   (c)  Until the first day after the Restriction Period,


                                      -20-




         no member of the New Grace Group shall sell or otherwise issue to
         any Person, or redeem or otherwise acquire from any Person (other
         than any member of the New Grace Group), any Equity Securities of
         New Grace or any other member of the New Grace Group; provided,
         however, that purchases that, in the aggregate, meet the
         requirements of Section 4.05(1)(b) of Revenue Procedure 96-30
         shall not constitute a redemption or acquisition of stock of New
         Grace for purposes of this Section 5.2(c).

                   (d)  Until the first day after the Restriction Period,
         no member of the New Grace Group shall (i) solicit any Person to
         make a tender offer for, or otherwise acquire or sell, the Equity
         Securities of New Grace, (ii) participate in or support any
         unsolicited tender offer for, or other acquisition or disposition
         of, the Equity Securities of New Grace or (iii) approve or
         otherwise permit any proposed business combination or any
         transaction which, in the case of (i), (ii) or (iii),
         individually or in the aggregate, together with the transactions
         contemplated under the Distribution Agreement, the Merger
         Agreement, the Benefits Agreement and this Agreement, results in
         one or more Persons acquiring (other than in acquisitions not
         taken into account for purposes of Section 355(e)) directly or
         indirectly stock representing a 50 percent or greater interest
         (within the meaning of Section 355(e) of the Code) in New Grace.
         In addition, no member of the New Grace Group shall at any time,
         whether before or subsequent to the expiration of the Restriction
         Period, engage in any action described in clauses (i), (ii) or
         (iii) of the preceding sentence if it is pursuant to an
         arrangement negotiated (in whole or in part) prior to the
         Distribution, even if at the time of the Distribution it is
         subject to various conditions, nor shall any such member take any
         action, or fail or omit to take any action, that would cause
         Section 355(d) or (e) of the Code to apply to the Distribution.

                   (e)  Until the first day after the Restriction Period,
         no member of the New Grace Group shall sell, transfer, or
         otherwise dispose of or agree to dispose of assets (including,
         for such purpose, any shares of capital stock of a Subsidiary)
         that, in the aggregate, constitute more than 60% of the gross
         assets of New Grace, nor shall they sell, transfer, or otherwise
         dispose of or agree to dispose of assets (including, for such
         purpose, any shares of capital stock of a Subsidiary) that, in
         the aggregate, constitute more than 60% of the consolidated gross
         assets of the New Grace Group.  The foregoing sentence shall not
         apply to sales, transfers, or dispositions of assets in the
         ordinary course of business or to a sale, transfer or disposition
         of any or all of the Discontinued Businesses and either of the
         Active New Grace Businesses; provided, however, that in the event
         of a sale, transfer or disposition of one of the Active New Grace
         Businesses, the retained Active New Grace Business shall be
         conducted by a member of the New Grace Group at substantially the
         same level as on the Distribution Date.  The percentages of gross
         assets or consolidated gross assets of New Grace or the New Grace
         Group, as the case may be, sold, transferred, or otherwise


                                      -21-




         disposed of, shall be based on the fair market value of the gross
         assets of New Grace and the New Grace Group as of the Effective
         Time, and for this purpose, the values set forth in the
         [Registration Statements] shall be conclusive.  

                   (f)  Until the first day after the Restriction Period,
         Grace-Conn. shall furnish Grace with a copy of any ruling request
         that Grace-Conn. or any of its Affiliates may file with the IRS
         and any opinion received that relates to or otherwise reasonably
         could be expected to have an effect on the Tax-Free Status of the
         Distribution.

                   Section 5.3.  Responsibility for Taxes.

                   (a)  Sealed Air and Grace agree to indemnify and hold
         the Grace-Conn. Indemnitees harmless from and against all
         Indemnifiable Losses resulting from (x) any Action which causes
         the Distribution to fail to have Tax-Free Status or (y) the
         Merger failing to qualify as a reorganization under Section 368
         of the Code.  An "Action" shall mean any act or omission which
         fails to comply with any of the representations in the Sealed Air
         Tax Matters Certificate or the covenants in Section 5.1 and any
         act or omission which would fail to comply with any of the
         covenants in Section 5.1 but for compliance with the Ruling/
         Opinion Exception.  An "Action" shall also include an action or
         omission which would be a breach of the covenant contained in the
         first sentence of Section 5.1(d), if such covenant were in effect
         until the day which is five years after the Effective Time
         instead of until the first day after the Restriction Period.

                   (b)  Grace-Conn. agrees to indemnify and hold the
         Packco Indemnitees harmless from and against any Tax resulting
         from the failure of the Distribution to have Tax-Free Status,
         except where such failure is attributable to an Action.

                   (c)  For purposes of Sections 5.1 and 5.2 hereof, when
         a tax opinion or ruling of one party (the "Transaction Party") is
         required to be reasonably satisfactory to the other party (the
         "Reviewing Party"), the Reviewing Party at the request of the
         Transaction Party shall designate nationally recognized counsel
         to review such opinion or ruling without revealing the substance
         of the underlying transaction to the Reviewing Party and the
         concurrence of such outside counsel to the sufficiency of such
         opinion or ruling shall constitute "reasonable satisfaction" to
         the Reviewing Party for purposes of this Agreement.

                   Section 5.4.  Injunction.  The parties hereto agree
         that the payment of monetary compensation would not be an
         adequate remedy for a breach of the obligations contained in
         Article V hereof, and each party consents to the issuance and
         entry of an injunction against the taking of any action by it or
         a member of its Group that would constitute such a breach;
         provided, however, that the foregoing shall be without prejudice



                                      -22-




         to and shall not constitute a waiver of any other remedy either
         party may be entitled to at law or at equity hereunder.


                                    ARTICLE VI.

                                   MISCELLANEOUS

                   Section 6.1.  Expenses.  Unless otherwise expressly
         provided in this Agreement, the Distribution Agreement or the
         Merger Agreement, each party shall bear any and all expenses that
         arise from their respective obligations under this Agreement.

                   Section 6.2.  Foreign Transfer Taxes.  Adjusted Foreign
         Transfer Taxes shall be shared by the parties as provided in the
         Distribution Agreement.  Audit adjustments and Final
         Determinations of such Taxes shall be governed by the
         Distribution Agreement.  This Agreement governs responsibilities
         of the parties with respect to filing Tax Returns relating to
         Foreign Transfer Taxes, paying Foreign Transfer Taxes reflected
         on such Tax Returns to the applicable governmental authority and
         conducting Proceedings relating to Foreign Transfer Taxes.  For
         purposes of determining indemnity and reimbursement obligations
         of the parties under this Agreement, Tax Items arising as a
         result of the Foreign Transfers (but not Tax Items arising from
         any actual distribution of Subsidiary Excess Cash) shall be
         disregarded, and the Pre-Distribution Schedules shall not reflect
         such Tax Items. 

                   Section 6.3.  Payments Paid or Received on Behalf of
         Indemnitees; Right to Designate Payee.  Each of Grace-Conn. and
         Grace shall be entitled to designate an Affiliate of such party
         as payee with respect to any payment that would otherwise be made
         to Grace-Conn. or Grace, respectively, under this Agreement.  Any
         payment received by Grace-Conn. or Grace, respectively, or its
         respective designees shall be received on behalf of the relevant
         Grace-Conn. Indemnitees or Packco Indemnitees.

                   Section 6.4.  Foreign Exchange Rate.  If any amount
         required to be paid hereunder is determined by reference to a
         Tax, Tax refund, Tax Benefit or Tax Detriment that is denominated
         in a currency other than United States dollars, such payment
         shall be made in United States dollars and the amount thereof
         shall be computed using the Foreign Exchange Rate for such
         currency determined as of the date that such Tax is paid, such
         Tax refund is received or such Tax Benefit or Tax Detriment
         reduces or increases the amount of Tax or Tax refund that would
         otherwise be paid or received.

                   Section 6.5.  Amendment.  This Agreement may not be
         amended except by an agreement in writing, signed by the parties
         hereto.  Anything in this Agreement or the Distribution Agreement
         to the contrary notwithstanding, in the event and to the extent
         that there shall be a conflict between the provisions of this
         Agreement and the Distribution Agreement, the provisions of this
         Agreement shall control.
                                      -23-




                   Section 6.6.  Notices.  All notices and other
         communications hereunder shall be in writing and shall be
         delivered by hand including overnight business courier or mailed
         by registered or certified mail (return receipt requested) to the
         parties at the following addresses (or at such other addresses
         for a party as shall be specified by like notice) and shall be
         deemed given on the date on which such notice is received:

                   (a)  To Grace-Conn. or any member of the New Grace
                        Group:

                        W. R. Grace & Co.-Conn.
                        One Town Center Road
                        Boca Raton, Florida  33486-1010
                        Attention:  Secretary
                        Fax:  (561) 362-1635

                   with a copy to:

                        Wachtell, Lipton, Rosen & Katz
                        51 West 52nd Street
                        New York, New York  10019
                        Attention:  Andrew R. Brownstein, Esq.
                        Fax:  (212) 403-2000

                   (b)  To Grace or any member of the Packco Group:

                        care of Sealed Air
                        Park 80 East
                        Saddle Brook, New Jersey  07663
                        Attention:  [               ]
                        Fax:  [               ]

                   with a copy to:

                        Davis Polk & Wardwell
                        450 Lexington Ave.
                        New York, New York  10017
                        Attention:  Christopher Mayer, Esq.
                        Fax:  (212) 450-4800

                   Section 6.7.  Resolution of Disputes.  Any disputes
         between the parties with respect to this Agreement regarding the
         practice and preparation of returns or the calculation of amounts
         shall be resolved by a "Big Six" public accounting firm whose
         determination shall be conclusive and binding on the parties.
         The fees and expenses of such firm shall be shared equally by
         Grace-Conn. and Grace, except as otherwise provided herein.  Any
         other disputes shall be resolved by a "Big Six" public accounting
         firm or a law firm or by any other procedure that the parties may
         choose.

                   Section 6.8.  Application to Present and Future
         Subsidiaries.  This Agreement is being entered into by Grace-


                                      -24-




         Conn. and Grace on behalf of themselves and each member of the
         New Grace Group and Packco Group, respectively.  This Agreement
         shall constitute a direct obligation of each such member.  Grace-
         Conn. and Grace hereby guarantee the performance of all actions,
         agreements and obligations provided for under this Agreement of
         each member of the New Grace Group and the Packco Group,
         respectively.  Grace-Conn. and Grace shall, upon the written
         request of the other, cause any of their respective Group members
         formally to execute this Agreement.  This Agreement shall be
         binding upon, and shall inure to the benefit of, the successors
         and assigns of any of the corporations bound hereby.

                   Section 6.9.  Term.  This Agreement shall commence on
         the date of execution indicated below and shall continue in
         effect until otherwise agreed to in writing by Grace-Conn. and
         Grace, or their successors.

                   Section 6.10.  Titles and Headings.  Titles and head-
         ings to Sections herein are inserted for the convenience of
         reference only and are not intended to be a part or to affect the
         meaning or interpretation of this Agreement.

                   Section 6.11.  Legal Enforceability.  Any provision of
         this Agreement which is prohibited or unenforceable in any
         jurisdiction shall, as to such jurisdiction, be ineffective to
         the extent of such prohibition or unenforceability without
         invalidating the remaining provisions hereof.  Any such
         prohibition or unenforceability in any jurisdiction shall not
         invalidate or render unenforceable such provision in any other
         jurisdiction.  Without prejudice to any rights or remedies
         otherwise available to any party hereto, each party hereto
         acknowledges that damages would be an inadequate remedy for any
         breach of the provisions of this Agreement and agrees that the
         obligations of the parties hereunder shall be specifically
         enforceable.

                   Section 6.12.  Governing Law.  This Agreement shall be
         governed by the laws of the State of Delaware. 


















                                      -25-




                   IN WITNESS WHEREOF, the parties have executed this
         Agreement as of the __ day of ___________, 1997.

                                       W. R. GRACE & CO.



                                       By: ____________________________
                                           Name:
                                           Title:



                                       W. R. GRACE & CO.-CONN.



                                       By: ____________________________
                                           Name:
                                           Title:



                                       SEALED AIR CORPORATION



                                       By: ____________________________
                                           Name:
                                           Title:


























                                      -26-