EXHIBIT 3.7

                        ARTICLES OF INCORPORATION

                                    OF

                        BURKE TIRE MATERIALS, INC.

KNOW ALL MEN BY THESE PRESENTS:

         THAT WE, the undersigned, have this day voluntarily associated 
ourselves together for the purpose of forming a corporation under the laws of 
the State of California.

                         AND WE HEREBY CERTIFY:

         ONE:  That the name of this Corporation is:

                       BURKE TIRE MATERIALS, INC.

         TWO:  The purposes for which this corporation is formed are:

         (a)  The specific business in which the corporation intends 
primarily to engage is that of the compounding, manufacture and sale at 
wholesale and retail of materials intended for use in the manufacture of 
tires to be used on vehicles of every nature.

         (b)  To own, operate, maintain, manage, equip, improve, repair, 
alter, and otherwise deal with, use and enjoy, to invent, design, develop, 
assemble, build, construct, fabricate, manufacture, buy, import, lease as 
lessee and otherwise acquire, to mortgage, deed in trust, pledge and 
otherwise encumber, and to sell, export, lease as lessor and otherwise 
dispose of goods, wares, merchandise and personal property of every sort, 
nature and description; to



purchase, acquire, own, hold, lease, either as lessor or lessee, sell, exchange,
subdivide, mortgage, deed in trust, plant, improve, cultivate, develop,
construct, maintain, equip, operate and generally deal in any and all lands,
improved and unimproved, dwelling houses, apartment houses, hotels, boarding
houses, business blocks, office buildings, garages, stations, warehouses,
manufacturing works and plants and other buildings of any kind or description,
real, personal and mixed, wheresoever situated, including water and water
rights.

         (c)  To acquire, by purchase or otherwise the goodwill, business, 
property rights, franchises and assets of every kind, with or without 
undertaking either wholly or in part the liabilities of any person, firm, 
association or corporation, and to acquire any business as a going concern or 
otherwise (1) by purchase of the assets thereof wholly or in part, (2) by 
acquisition of the shares or any part thereof, or (3) in any other manner, 
and to pay for the same in cash or in the shares or bonds or other evidences 
of indebtedness of this corporation, or otherwise to hold, maintain, and 
operate, or in any manner dispose of, the whole or any part of the goodwill, 
business, rights and property so acquired, and to conduct in any lawful 
manner the whole or any part of any business so acquired, and to exercise all 
the powers necessary or convenient in and about the management of such 
business.

         (d)  To buy, contract for, lease, and in any and all other ways 
acquire, take, hold and own, and to sell, mortgage, pledge, deed in trust, 
lease and otherwise dispose of patents, licenses and pro-


                                     -2-



cesses or rights thereunder, and franchise rights, governmental, state, 
territorial, county and municipal grants and concessions of every character 
of which this corporation may deem advantageous in the prosecution of its 
business, or in the maintenance, operation, development or extension of its 
properties.

         (e)  To enter into, make, perform and carry out contracts of every 
kind for any lawful purpose without limit to amount, with any person, firm, 
association or corporation, municipality, county, parish, state, territory, 
government or other municipal or governmental subdivision.
                      
         (f)  From time to time to apply for, acquire by assignment, 
purchase, transfer or otherwise, exercise, carry out and enjoy any benefit, 
right, privilege, prerogative or power conferred by, acquired under or 
granted by any statute, ordinance, order, license, power, authority, 
franchise, commission, right or privilege which any government or authority 
or governmental agency or corporation or other public body may be empowered 
to enact, make or grant; to pay for, aid in, and contribute toward carrying 
the same into effect and to appropriate any of this corporation's shares, 
and/or assets to defray the costs, charges and expenses thereof.
                      
         (g)  To borrow money; to issue bonds, notes, debentures or other 
obligations of this corporation from time to time for any of the objects or 
purposes of this corporation, and to secure the same by mortgage, pledge, 
deed of trust or otherwise, or to issue the same unsecured.


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         (h)  To lend money; to purchase, acquire, own, hold, guarantee, 
sell, assign, transfer, mortgage, pledge or otherwise dispose of and deal in 
shares, bonds, notes, debentures, or other securities or evidences of 
indebtedness of any other person, corporation or association, whether 
domestic or foreign, and whether now or hereafter organized or existing; and 
while the holder thereof to exercise all the rights, powers and privileges of 
ownership including the right to vote thereon, to the same extent as a 
natural person might or could do.

         (i)  To promote or to aid in any manner, financially or otherwise, 
any person, corporation or association of which any shares, bonds, notes, 
debentures or other securities or evidences of indebtedness are held directly 
or indirectly by this corporation; and for this purpose to guarantee the 
contracts, dividends, shares, bonds, debentures, notes and other obligations 
of such persons, corporations or associations; and to do any other acts or 
things designed to protect, preserve, improve or enhance the value of such 
shares, bonds, notes, debentures or other securities or evidences of 
indebtedness.

         (j)  To carry on any business whatsoever which this corporation may 
deem proper or convenient in connection with any of the foregoing purposes or 
otherwise or which may be calculated directly or indirectly to promote the 
interests of this corporation or to enhance the value of its property or 
business; to conduct its business in this state, or other states, in the 
District of Columbia, in the territories and colonies of the United States, 
or in foreign


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countries, and to hold, purchase, mortgage and convey real and personal 
property, either in or out of the State of California, and to exercise all 
the powers conferred by the Laws of California upon corporations formed under 
the laws pursuant to and under which this corporation is formed as such laws 
are now in effect or may at any time hereafter be amended.

         (k)  To carry out all or any part of the foregoing objects and 
purposes as principal, agent, contractor or otherwise, either alone or in 
conjunction with any person, firm, association or other corporation, and in 
any part of the world and in carrying on its business and for the purpose of 
attaining or furthering any of its objects or purposes, to make and perform 
such contracts of any kind and description, to do such acts and things, and 
to exercise any and all such powers, as a natural person could lawfully make, 
perform, do or exercise, provided that the same be not inconsistent with the 
laws of the State of California.

         (l)  To do each and every thing necessary, suitable or proper for 
the accomplishment of any of the purposes or the attainment of any one or 
more of the objects herein enumerated, or which shall at any time appear 
proper and conducive for the protection or benefit of this corporation.

         The foregoing statement of purposes shall be construed as a 
statement of both purposes and powers and the purposes and the powers stated 
in each clause shall in no way be limited or restricted by reference to or 
inference from the terms or provisions of any other clause.


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         THREE:  The County in the State of California where the principal 
office for the transaction of the business of this corporation is to be 
located is Santa Clara County.

         FOUR:  This corporation is authorized to issue only one class of 
shares of stock, the total number of such shares is seven thousand five 
hundred (7,500), each of such shares of stock is to have a par value of Ten 
Dollars ($10.00), and the aggregate par value of all shares having a par 
value is Seventy-Five Thousand Dollars ($75,000.00).

         FIVE:  (a)  The number of the directors of this corporation shall be 
four (4).

                (b)  The names and addresses of the persons who are appointed 
to act as the first directors of this corporation are:

     NAME                          ADDRESS
     ----                          -------

   HALSEY C. BURKE,  2250 So. 10th St., San Jose, California 
   NORMAN R. BURKE,  2250 So. 10th St., San Jose, California 
   D. W. KUTNEWSKY,  2250 So. 10th St., San Jose, California 
   VIRGIL C. PRICE,  2250 So. 10th St., San Jose, California

         IN WITNESS WHEREOF, for the purpose of forming this corporation 
under the laws of the State of California, we, the undersigned, constituting 
the incorporators of this corporation, including the persons named 
hereinabove as the first directors of this corporation, have executed these 
Articles of Incorporation on  SEP. 10 1971.


        /s/ Halsey C. Burke                          /s/ Norman R. Burke
- -----------------------------------       -----------------------------------
          Halsey C. Burke                              Norman R. Burke

        /s/ D.W. Kutnewsky                           /s/ Virgil C. Price
- -----------------------------------       -----------------------------------
          D.W. Kutnewsky                               Virgil C. Price


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STATE OF CALIFORNIA   )
                      ) ss:
COUNTY OF SANTA CLARA )

         On SEP. 10 1971, before me the undersigned, a Notary Public in and for 
said County and State, residing therein, duly commissioned and sworn, 
personally appeared HALSEY C. BURKE, NORMAN R. BURKE, D.W. KUTNEWSKY and 
VIRGIL C. PRICE, known to me to be the persons whose names are subscribed to 
the foregoing ARTICLES OF INCORPORATION, and acknowledged to me that they 
executed the same. 

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my 
official seal on the day and year first above written.


                                                /s/ Stephen H. Pray
                                        ------------------------------------
                                                   STEPHEN H. PRAY
                                        Notary Public in and for said County
                                                      And State
[SEAL]


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             CERTIFICATE OF AMENDMENT OF ARTICLES OF INCORPORATION

HALSEY C. BURKE NORMAN R. BURKE and D. W. KUTNEWSKY certify that:

         1.   They constitute a majority of the directors of BURKE TIRE 
MATERIALS, INC., a California corporation.

         2.   They hereby adopt the following amendment of the articles of 
incorporation of the corporation:

              Article One is amended to read as follows:

              "ONE.  That the name of this Corporation is:

                        BURKE CUSTOM PROCESSING, INC."

         3.  No shares have been issued.

                                                /s/ Halsey C. Burke
                                        ------------------------------------
                                              Halsey C. Burke, Director

                                                  /s/ Norman R. Burke
                                        ------------------------------------
                                               Norman R. Burke, Director

                                                 /s/ D. W. Kutnewsky
                                        ------------------------------------
                                              D. W. Kutnewsky, Director


         The undersigned declare under penalty of perjury that the matters 
set forth in the foregoing certificate are true of their own knowledge.
Executed at San Jose, California, on December 10, 1979.


                                                 /s/ Halsey C. Burke
                                        ------------------------------------
                                                   Halsey. C. Burke


                                                 /s/ Norman R. Burke
                                        ------------------------------------
                                                   Norman R. Burke


                                                  /s/ D. W. Kutnewsky
                                        ------------------------------------
                                                     D. W. Kutnewsky