SECURITIES AND EXCHANGE COMMISSION
                            Washington, D. C. 20549



                                   FORM 11-K

         [  X  ]      ANNUAL REPORT PURSUANT TO SECTION 15(d)
                      OF THE SECURITIES EXCHANGE ACT OF 1934



                      For the fiscal year ended December 31, 2000

                      Commission File Number 1-2227

                  C.  Full title of the plan:

                      Crown Cork & Seal Company, Inc.
                      Retirement Thrift Plan

                  D.  Name of issuer of the Securities held pursuant to the plan
                      and the address of its principal executive office:

                        CROWN CORK & SEAL COMPANY, INC.
                                 ONE CROWN WAY
                          PHILADELPHIA, PA 19154-4599





                                     INDEX



                                                                        Page(s)

Signatures................................................................3

Report of Independent Accountants.........................................6

Audited Plan Financial Statements and Schedules in accordance with
the Financial Reporting Requirements of ERISA...........................7 - 13

Exhibit 23 - Consent of Independent Accountants..........................14





                                   SIGNATURES



Pursuant  to the  requirements  of the  Securities  Exchange  Act  of  1934  the
Committee  has duly caused this annual  report to be signed on its behalf by the
undersigned hereto duly authorized.





                                               Crown Cork & Seal Company, Inc.
                                               Retirement Thrift Plan



                                          By:  /s/ James T. Malec
                                               -----------------------
                                               James T. Malec
                                               Member, Benefit Plan Committee


Date:  June 28, 2001
       -------------





CROWN CORK & SEAL COMPANY, INC.
RETIREMENT THRIFT PLAN




Financial Statements as of and for the years ended
December 31, 2000 and 1999


Additional information required for Form 5500
as of and for the year ended December 31, 2000







Crown Cork & Seal Company, Inc.
Retirement Thrift Plan
Table of Contents
- --------------------------------------------------------------------------------

                                                                        Page(s)

Report of Independent Accountants                                          1

Basic Financial Statements

         Statement of Net Assets Available for Benefits                    2

         Statement of Changes in Net Assets Available for Benefits         3

         Notes to Financial Statements                                   4 - 7

Additional Information *

         Schedule I  -  Schedule of Assets (Held at End of Year)           8










*  Other supplemental schedules required by Section 2520.103-10 of the
   Department of Labor Rules and Regulations for Reporting and Disclosure under
   the Employee Retirement Income Security Act of 1974 have been omitted because
   they are not applicable.





                       Report of Independent Accountants


To the Benefit Plans Committee and Participants of the
Crown Cork & Seal Company, Inc. Retirement Thrift Plan

In our opinion, the accompanying statements of net assets available for benefits
and the  related  statements  of changes in net assets  available  for  benefits
present fairly, in all material respects,  the net assets available for benefits
of the Crown Cork & Seal Company,  Inc.  Retirement  Thrift Plan (the "Plan") at
December 31, 2000 and 1999, and the changes in net assets available for benefits
for the years then ended,  in conformity with  accounting  principles  generally
accepted in the United States of America.  These  financial  statements  are the
responsibility  of the Plan's  management;  our  responsibility is to express an
opinion on these  financial  statements  based on our audits.  We conducted  our
audits of these  statements in  accordance  with  auditing  standards  generally
accepted in the United States of America, which require that we plan and perform
the audit to obtain reasonable  assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence  supporting the amounts and  disclosures  in the financial  statements,
assessing the  accounting  principles  used and  significant  estimates  made by
management,  and evaluating the overall  financial  statement  presentation.  We
believe that our audits provide a reasonable basis for our opinion.

Our audits  were  conducted  for the  purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule of assets (held
at end of year) is presented for the purpose of additional analysis and is not a
required part of the basic financial statements but is supplementary information
required by the  Department of Labor's Rules and  Regulations  for Reporting and
Disclosure  under the Employee  Retirement  Income  Security  Act of 1974.  This
supplemental  schedule  is the  responsibility  of the  Plan's  management.  The
supplemental  schedule has been subjected to the auditing  procedures applied in
the audits of the basic  financial  statements  and, in our  opinion,  is fairly
stated in all material  respects in relation to the basic  financial  statements
taken as a whole.



PricewaterhouseCoopers LLP


Philadelphia, Pennsylvania
June 1, 2001


                                       1






CROWN CORK & SEAL COMPANY, INC. RETIREMENT
THRIFT PLAN
Statements of Net Assets Available for Benefits

- ------------------------------------------------------------------------------------------------------------------------------------

                                                                                                As of December 31,
                                                                                       2000                           1999
                                                                                ----------------------------------------------------
                                                                                                         

Investments, at fair value
Registered investment companies:
     Vanguard 500 Index Fund                                                    $   39,059,463 *               $   42,456,089 *
     Vanguard Balanced Index Fund                                                    8,288,511 *                    8,562,339 *
     Vanguard Explorer Fund                                                          8,184,128 *                    6,017,959 *
     Vanguard International Growth Fund                                              3,465,073                      3,567,039
     Vanguard Total Bond Market Index Fund                                           5,753,856 *                    5,434,830 *
                                                                                --------------                 --------------
                                                                                    64,751,031                     66,038,256
Vanguard Retirement Savings Trust                                                   24,356,058 *                   24,974,650 *
Crown Cork & Seal Company, Inc. Stock Fund                                           1,582,795                      1,199,100
Participant Loans                                                                    2,986,253                      1,888,304
                                                                                --------------                 --------------
        Total investments                                                           93,676,137                     94,100,310
                                                                                --------------                 --------------

Receivables
Employer's contributions                                                               156,960                        202,674
Participants' contributions                                                            580,521                        774,783
                                                                                --------------                 --------------

        Total receivables                                                              737,481                        977,457
                                                                                --------------                 --------------

Net assets available for benefits                                               $   94,413,618                 $   95,077,767
                                                                                ==============                 ==============

<FN>
* Represents 5% or more of net assets available for benefits.
</FN>








                                       2








CROWN CORK & SEAL COMPANY, INC. RETIREMENT
THRIFT PLAN
Statements of Changes in Net Assets Available for Benefits

- ------------------------------------------------------------------------------------------------------------------------------------

                                                                                             Year Ended December 31,
                                                                                       2000                           1999
                                                                                ----------------------------------------------------
                                                                                                        
Additions
Investment income:
     Interest and dividend income, investments                                  $    4,506,031                 $    3,166,079
     Interest income, participant loans                                                168,115                         99,511
     Net (depreciation) appreciation in fair value of investments                   (7,237,807)                     7,133,792
                                                                                --------------                 --------------
                                                                                    (2,563,661)                    10,399,382
                                                                                --------------                 --------------
Contributions:
     Employer                                                                        2,499,424                      1,848,980
     Participant                                                                     8,173,976                      7,374,432
                                                                                --------------                 --------------
                                                                                    10,673,400                      9,223,412
                                                                                --------------                 --------------

Asset transfers in                                                                           -                     29,157,940
                                                                                --------------                 --------------
        Total additions                                                              8,109,739                     48,780,734
                                                                                --------------                 --------------

Deductions
Payment of benefits                                                                  8,728,618                      8,160,035
Asset transfers out                                                                     20,253                              -
Administrative expenses                                                                 25,017                         20,995
                                                                                --------------                 --------------
        Total deductions                                                             8,773,888                      8,181,030
                                                                                --------------                 --------------
Net (decrease) increase                                                               (664,149)                    40,599,704

Net assets available for plan benefits:
     Beginning of year                                                              95,077,767                     54,478,063
                                                                                --------------                 --------------
     End of year                                                                $   94,413,618                 $   95,077,767
                                                                                ==============                 ==============







The accompanying notes are an integral part of these
financial statements.


                                       3







NOTE 1 - DESCRIPTION OF PLAN

The  following  description  of the Crown Cork & Seal Company,  Inc.  Retirement
Thrift Plan (the "Plan") provides only general information.  Participants should
refer  to the  Plan  document  for a more  complete  description  of the  Plan's
provisions.

General
The plan is a voluntary defined contribution plan which is designed to provide a
convenient method by which eligible  employees may save regularly through salary
deferrals.  Participation  in the  Plan  is  determined  by an  agreement  among
recognized  collective bargaining units and Crown Cork & Seal Company, Inc. (the
"Company")  or as otherwise  agreed upon  between the Company and  non-organized
hourly  employees.  The Plan is  administered  by the Crown Cork & Seal Company,
Inc.  Benefit Plans  Committee  (the  "Committee").  The Committee has appointed
Vanguard Fiduciary Trust Company ("VFTC") as the trustee of the Plan.

The Plan provides certain employees the opportunity to purchase Company stock at
a purchase price equal to the closing price on the day of deposit.

During 1999,  the Company sold a segment of the  Composite  Can  division.  As a
result  of this  transaction,  participant  accounts  of  former  Composite  Can
employees were transferred out of the Plan in 2000 in the amount of $20,253.

The Crown Cork & Seal  Company,  Inc.  Retirement  Thrift Plan for  Non-Salaried
Employees of CONSTAR  International,  Inc. ("CONSTAR  Thrift"),  the participant
accounts  of the  non-salaried  employees  of the Zeller  Plastik,  Inc.  401(k)
Savings Plan ("Zeller"),  the Crown Cork & Seal Company,  Inc. Retirement Thrift
Plan for  International  Association  of Machinists  Local 1584 of Fremont Plant
No.62  ("Fremont  Thrift") and the Crown Cork & Seal  Company,  Inc.  Retirement
Thrift Plan for  International  Association of Machinists  Local 1528 of Modesto
Plant No. 79  ("Modesto  Thrift")  were merged with and into the Plan  effective
March 31, 1999,  August 31, 1999,  September  30, 1999,  and September 30, 1999,
respectively.  The assets  transferred  totaled  $17,926,398 for CONSTAR Thrift,
$977,972 for Zeller,  $5,358,924  for Fremont  Thrift and $4,633,372 for Modesto
Thrift. In addition, $261,274 of assets from the Crown Cork & Seal Company, Inc.
401(k)  Retirement  Savings Plan for  Employees of Risdon  Corporation  ("Risdon
401(k)") were  transferred  in 1999 upon  completion  of the plan merger,  which
occurred in 1998.

During these conversions, freeze periods were enforced to restrict transactions.
Once the  freeze  periods  were  lifted  participants  could  change  investment
elections.

Contributions
Participants  may elect to make  basic  and  supplemental  contributions  (where
permitted)  each  pay  period.  Contribution  amounts  are  subject  to  certain
limitations,  $10,500  in 2000  and  $10,000  in  1999,  as  prescribed  by law.
Participants   direct  the  investment  of  their   contributions  into  various
investment  options offered by the Plan. Basic  contributions  may be matched by
the Company at various rates.  Supplemental  contributions (where permitted) are
not matched by the Company.  In addition,  certain  participants  receive  fixed
contributions  from the Company at varying rates.  Participants  should refer to
the Plan document for a more complete description of the Plan's provisions.


                                       4






Participant Accounts
Each participant's  account is credited with the participant's  contribution and
allocation of (a) the Company's  contribution and (b) Plan earnings, and charged
with  an  allocation  of  administrative  expenses.  Allocations  are  based  on
participant  earnings or account  balances,  as defined.  The benefit to which a
participant   is  entitled  is  the  benefit  that  can  be  provided  from  the
participant's vested account.

Vesting
Participants are immediately vested in their  contributions plus actual earnings
thereon.  Vesting  in the  Company's  matching  contribution  portion  of  their
accounts plus  earnings  thereon is based on various  rates  established  in the
collective bargaining agreements or in the plan documents. A participant becomes
100 percent vested after completing 4 or 5 years of service, as defined.

Participant Loans
The Plan  does  not  generally  allow  participants  to take  loans  from  their
accounts.  However,  in some  circumstances  participants  who are  employees of
certain divisions of the Company and participants who are former participants of
certain  plans  which have  merged  into the Plan are  allowed  loans from their
accounts.  Generally, these participants may borrow from their vested accounts a
maximum of the lessor of $50,000 or 50% of their account balance.  The loans are
secured  by the  balance  in the  participant's  account  and bear  interest  at
prevailing  interest  rates.  Principal  and interest  are paid ratably  through
monthly payroll deductions.

Payment of Benefits
On  termination of service due to  retirement,  attainment of age 65,  permanent
plant shutdown,  permanent disability, or death, the participant,  or his or her
beneficiary,  automatically  becomes fully vested in the Company  contributions.
Distributions  to  participants  are  generally  paid  in a  lump  sum.  Certain
participants have the option of being paid in monthly installments.

Forfeited Accounts
Total  unallocated  forfeitures,  which will be used to reduce  future  employer
contributions,  were  $110,648  and  $12,698  at  December  31,  2000 and  1999,
respectively.   These   amounts   will  be  used  to  reduce   future   employer
contributions.  In 2000 and 1999, $0 and $210,903,  respectively, of unallocated
forfeitures were used to offset employer contributions.

Plan Termination
The  Company  reserves  the right to  retroactively  amend or modify  any of the
provisions  of the Plan in any respect in order to qualify or maintain  the Plan
as a plan meeting the  requirements of the Employee  Retirement  Income Security
Act of 1974 ("ERISA") or any other applicable  legislation.  The Plan is subject
to the  provisions of ERISA.  Although it has not expressed any intent to do so,
the Company has the right under the Plan to discontinue its contributions at any
time and to terminate the Plan subject to the provisions of ERISA.  In the event
of Plan  termination,  participants  will  become  100  percent  vested in their
accounts.


                                       5







NOTE 2 - SUMMARY OF ACCOUNTING POLICIES

The following  accounting  policies,  which conform with  accounting  principles
generally accepted in the United States of America,  have been used consistently
in the preparation of the Plan's financial statements:

Basis of Accounting
The financial  statements of the Plan are prepared  under the accrual  method of
accounting.

Use of Estimates
The  preparation  of  financial   statements,   in  conformity  with  accounting
principles  generally  accepted  in  the  United  States  of  America,  requires
management to make estimates and assumptions that affect the reported amounts of
assets and  liabilities  and disclosure of contingent  assets and liabilities at
the date of the financial  statements,  as well as reported amounts of additions
and  deductions  during the reporting  period.  Actual results could differ from
those estimates.

Investment Valuation and Income Recognition
The Plan's investments are stated at fair value. Shares of registered investment
companies are valued at quoted market prices which represent the net asset value
of shares held by the Plan at year-end. Units of the Vanguard Retirement Savings
Trust (a  common/collective  trust) are  valued at the net asset  value of units
held by the Plan at year-end.  The Company  stock fund is valued at its year-end
unit closing price  (comprised  of year-end  market price plus  uninvested  cash
position). Participant loans are valued at cost, which approximates fair value.

Purchases and sales of investments are recorded on a trade-date basis.  Interest
income is accrued when earned.  Dividend  income is recorded on the  ex-dividend
date. Capital gain distributions are included in dividend income.

NOTE 3 - INVESTMENTS

During  2000 and 1999,  the Plan's  investments  (including  gains and losses on
investments  bought  and sold,  as well as held  during  the  year)  appreciated
(depreciated) in value as follows:

                                                     2000               1999
                                                     ----               ----

Registered investment companies                 $ (6,284,264)      $  7,542,425
Common stock                                        (953,543)          (408,633)
                                             -----------------------------------
                                                $ (7,237,807)      $  7,133,792
                                             ===================================

All investments are participant-directed.

NOTE 4 - RELATED PARTY TRANSACTIONS

The Plan invests in shares of registered investment companies and a
common/collective trust managed by an affiliate of VFTC. VFTC acts as trustee
for only those investments as defined by the Plan. The Plan also invests in
shares of the Company's stock through the Crown Cork & Seal Company, Inc. Stock
Fund. Transactions in such investments qualify as party-in-interest transactions
and are exempt from the prohibited transaction rules.


                                       6




NOTE 5 - TAX STATUS

The Internal Revenue Service has determined and informed the Company by a letter
dated February 13, 1996 that the Plan and related trust are designed in
accordance with applicable sections of the Internal Revenue Code ("IRC"). The
Plan has been amended since receiving the determination letter. However, the
Plan administrator believes that the Plan is designed and is currently being
operated in compliance with the applicable requirements of the IRC.







                                       7














                    Additional Information
                    Required for Form 5500









CROWN CORK & SEAL COMPANY, INC. RETIREMENT                         Schedule I
THRIFT PLAN
Schedule of Assets (Held at End of Year)
As of December 31, 2000

- ------------------------------------------------------------------------------------------------------------------------------------
Crown Cork & Seal Company, Inc. Retirement Thrift Plan, EIN 23-1526444
Form 5500, Schedule H, Part IV, Line i


     Identity of Issue                                                   Investment Type                             Current Value
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                               

*    Vanguard 500 Index Fund                                      Registered Investment Company                      $ 39,059,463
*    Vanguard Balanced Index Fund                                 Registered Investment Company                         8,288,511
*    Vanguard Explorer Fund                                       Registered Investment Company                         8,184,128
*    Vanguard International Growth Fund                           Registered Investment Company                         3,465,073
*    Vanguard Total Bond Market Index Fund                        Registered Investment Company                         5,753,856
*    Vanguard Retirement Savings Trust                            Common/Collective Trust                              24,356,058
*    Crown Cork & Seal Company, Inc.                              Common Stock                                          1,582,795
*    Crown Cork & Seal Company, Inc. Retirement Thrift Plan       Participant Loans (7.75% - 10.50%)                    2,986,253
                                                                                                                     ------------

Total assets (held at end of year)                                                                                   $ 93,676,137
                                                                                                                     ============



<FN>
* Party in Interest
</FN>