<PAGE>

                                                                  Exhibit 10-229

                          ELEVENTH AMENDMENT AGREEMENT

         THIS ELEVENTH AMENDMENT AGREEMENT (this "Agreement") is made as of the
17th day of February, 2003, by and among BANK ONE, NA (fka Bank One, Akron, NA)
("Lender"), LEXINGTON PRECISION CORPORATION, a Delaware corporation ("LPC"), and
LEXINGTON RUBBER GROUP, INC. (fka Lexington Components, Inc.), a Delaware
corporation ("LRG", hereinafter LPC and LRG are referred to each as "Borrower"
singularly and referred to jointly and severally as "Borrowers", which term
shall mean each of the companies individually and both of the companies
collectively).

         WHEREAS, Borrowers and Lender are parties to a certain Credit Facility
and Security Agreement, including Rider A thereto, dated as of January 31, 1997,
as amended and as it may from time to time be further amended, supplemented or
otherwise modified, which provides for certain credit facilities all upon the
terms and conditions set forth therein ("Credit and Security Agreement");

         WHEREAS, Borrowers and Lender desire to amend the Credit and Security
Agreement to modify certain provisions thereof; and

         WHEREAS, each term used herein shall be defined in accordance with the
Credit and Security Agreement.

         NOW, THEREFORE, in consideration of the premises and of the mutual
covenants herein and for other valuable considerations, Borrowers and Lender
agree as follows:

         1.       Section 2(B)(2)(b) of the Credit and Security Agreement is
hereby deleted in its entirety with the following being inserted in place
thereof:

                           (b) FIXED PRINCIPAL INSTALLMENTS. Subject otherwise
                  to the terms and provisions of the North Canton Term Note, the
                  principal balance of the North Canton Term Loan shall be
                  payable in two (2) equal monthly installments of ELEVEN
                  THOUSAND ONE HUNDRED ELEVEN AND 11/100 DOLLARS ($11,111.11)
                  each, on March 3, 2003 and April 1, 2003, with the balance
                  thereof payable in full on April 4, 2003.

         2.       Section 2(C)(2)(b) of the Credit and Security Agreement is
hereby deleted in its entirety with the following being inserted in place
thereof:

                           (b) FIXED PRINCIPAL INSTALLMENTS. Subject otherwise
                  to the terms and provisions of the Vienna Term Note, the
                  principal balance of the Vienna Term Loan shall be payable in
                  two (2) equal monthly installments of EIGHT THOUSAND THREE
                  HUNDRED THIRTY THREE AND 33/100 DOLLARS ($8,333.33) each, on
                  March 3, 2003 and April 1, 2003, with the balance thereof
                  payable in full on April 4, 2003.

         3.       Section 2(D)(2) of the Credit and Security Agreement is hereby
deleted in its entirety with the following being inserted in place thereof:


<PAGE>


                  2.       CASA GRANDE TERM LOAN. At the end of the Casa Grande
         Commitment Period, the Casa Grande Construction Loans automatically
         converted to a term loan (the "Casa Grande Term Loan"). The Casa Grande
         Note shall evidence the Casa Grande Term Loan. The Casa Grande Term
         Loan shall be payable in two (2) equal monthly installments of SIXTEEN
         THOUSAND SIX HUNDRED SIXTY-SIX AND 00/100 DOLLARS ($16,666.00) each,
         together with all accrued interest due at the time of payment of
         principal, on March 3, 2003 and April 1, 2003, with the balance thereof
         payable in full on April 4, 2003. The Casa Grande Term Loan shall bear
         interest on the unpaid principal balance at a rate per annum equal to
         the Base Rate plus three-fourths of one percent (3/4%). Such interest
         is payable monthly on March 3, 2003 and April 1, 2003. Interest shall
         be computed on a three hundred sixty (360) day basis based upon the
         actual number of days elapsed.

         4.       Section 2(E)(2)(b) of the Credit and Security Agreement is
hereby deleted in its entirety with the following being inserted in place
thereof:

                           (b) FIXED PRINCIPAL INSTALLMENTS. Subject otherwise
                  to the terms and provisions of the LaGrange Term Note, the
                  principal balance of the LaGrange Term Loan shall be payable
                  in two (2) equal monthly installments of EIGHT THOUSAND EIGHT
                  HUNDRED EIGHTY-EIGHT AND 89/100 DOLLARS ($8,888.89) each, on
                  March 3, 2003 and April 1, 2003, with the balance thereof
                  payable in full on April 4, 2003.

         5.       As a condition precedent to the effectiveness of this
Agreement, Borrowers shall pay all reasonable legal fees and expenses of Lender
incurred in connection with this Agreement.

         6.       Borrowers hereby represent and warrant to Lender that (a) each
Borrower has the legal power and authority to execute and deliver this
Agreement; (b) this Agreement has been duly executed and delivered by each
Borrower; (c) the execution and delivery hereof by each Borrower and the
performance and observance by each Borrower of the provisions hereof do not
violate or conflict with the organizational documents of such Borrower or any
law applicable to such Borrower or result in a breach of any provision of or
constitute a default under any other agreement, instrument or document binding
upon or enforceable against such Borrower; (d) as of the date hereof, and after
giving effect to the transactions contemplated by this Agreement, each Borrower
is able to pay its debts as they mature and each Borrower's capital is
sufficient and not unreasonably small for the business and transaction in which
such Borrower is engaged or about to engage; (e) no Default or Event of Default
exists under the Credit and Security Agreement, nor will a Default or Event of
Default occur upon the execution and delivery of this Agreement; and (f) this
Agreement has been duly authorized, executed, and delivered by each Borrower and
constitutes a legal, valid and binding obligation of each Borrower, enforceable
in accordance with its terms.

         7.       Each reference that is made in the Credit and Security
Agreement or any other writing shall hereafter be construed as a reference to
the Credit and Security Agreement as amended hereby. Except as herein otherwise
specifically provided, all provisions of the Credit

                                       2


<PAGE>

and Security Agreement shall remain in full force and effect in accordance with
their terms and shall not be amended or modified hereby.

         8.       This Agreement may be executed in any number of counterparts
and by different parties hereto in separate counterparts and by facsimile
signature, each of which when so executed and delivered shall be deemed to be an
original and all of which taken together shall constitute but one and the same
agreement.

         9.       THIS AGREEMENT AND THE NOTES SHALL BE GOVERNED BY, AND
CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE INTERNAL LAWS OF THE STATE OF
OHIO. EXCEPT AS OTHERWISE PROVIDED FOR IN THIS AGREEMENT OR AS REQUIRED BY
APPLICABLE LAW, EACH BORROWER WAIVES (i) PRESENTMENT, DEMAND AND PROTEST AND
NOTICE OF PRESENTMENT, PROTEST, DEFAULT, NONPAYMENT, MATURITY, RELEASE,
COMPROMISE, SETTLEMENT, EXTENSION OR RENEWAL OF ANY OR ALL COMMERCIAL PAPER,
ACCOUNTS, CONTRACT RIGHTS, DOCUMENTS, INSTRUMENTS, CHATTEL PAPER AND GUARANTIES
AT ANY TIME HELD BY LENDER ON WHICH ANY BORROWER MAY IN ANY WAY BE LIABLE, (ii)
NOTICE PRIOR TO TAKING POSSESSION OR CONTROL OF THE COLLATERAL WHICH MIGHT BE
REQUIRED BY ANY COURT PRIOR TO ALLOWING LENDER TO EXERCISE ANY OF LENDER'S
REMEDIES AND (iii) ITS RIGHT TO A JURY TRIAL IN THE EVENT OF ANY LITIGATION
INSTITUTED IN RESPECT OF THIS AGREEMENT, THE NOTES OR ANY OF THE OTHER CREDIT
DOCUMENTS. EACH BORROWER ACKNOWLEDGES THAT IT HAS BEEN ADVISED BY COUNSEL OF ITS
CHOICE WITH RESPECT TO THIS AGREEMENT AND THE TRANSACTIONS EVIDENCED BY THIS
AGREEMENT. EACH BORROWER HEREBY IRREVOCABLY CONSENTS AND AGREES THAT ANY LEGAL
ACTION IN CONNECTION WITH THIS AGREEMENT MAY BE INSTITUTED IN THE COURTS OF THE
STATE OF OHIO, IN THE COUNTY OF STARK OR THE UNITED STATES COURTS FOR THE
NORTHERN DISTRICT OF OHIO, AS LENDER MAY ELECT, AND BY EXECUTION AND DELIVERY OF
THIS AGREEMENT, EACH BORROWER HEREBY IRREVOCABLY ACCEPTS AND SUBMITS TO, FOR
ITSELF AND IN RESPECT OF ITS PROPERTY, THE NON-EXCLUSIVE JURISDICTION OF ANY
SUCH COURT, AND TO ALL PROCEEDINGS IN SUCH COURTS. BORROWERS AND LENDER
ACKNOWLEDGE THAT JURY TRIALS OFTEN ENTAIL ADDITIONAL EXPENSES AND DELAYS NOT
OCCASIONED BY NON-JURY TRIALS. BORROWERS AND LENDER AGREE AND STIPULATE THAT A
FAIR TRIAL MAY BE HAD BEFORE A STATE OR FEDERAL JUDGE BY MEANS OF A BENCH TRIAL
WITHOUT A JURY. IN VIEW OF THE FOREGOING, AND AS A SPECIFICALLY NEGOTIATED
PROVISION OF THIS AGREEMENT, BORROWERS AND LENDER HEREBY EXPRESSLY WAIVE ANY
RIGHT TO TRIAL BY JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION ARISING
UNDER THIS AGREEMENT, OR THE TRANSACTIONS RELATED HERETO, WHETHER NOW EXISTING
OR HEREAFTER ARISING, AND WHETHER SOUNDING IN CONTRACT OR TORT OR OTHERWISE; AND
BORROWERS AND LENDER HEREBY AGREE AND CONSENT THAT BORROWERS OR LENDER MAY FILE
AN ORIGINAL COUNTERPART OR A COPY OF THIS SECTION WITH ANY COURT AS WRITTEN
EVIDENCE OF THE CONSENT OF THE PARTIES HERETO TO THE WAIVER OF THEIR RIGHT TO
TRIAL BY JURY.


                                       3


<PAGE>

                                     LEXINGTON PRECISION CORPORATION


                                     By: /s/ Michael A. Lubin
                                         ---------------------------------------
                                     Its: Chairman of the Board
                                          --------------------------------------


                                     LEXINGTON RUBBER GROUP, INC.
                                     (fka Lexington Components, Inc.)


                                     By: /s/ Michael A. Lubin
                                         ---------------------------------------
                                     Its: Michael A. Lubin
                                          --------------------------------------


                                     BANK ONE, NA (fka as Bank One, Akron, NA)


                                     By: /s/ Randy Abrams
                                         --------------------------------------
                                     Its: Associate Director
                                          --------------------------------------



                                       4