AMENDMENT NO. 4 TO LOAN AND SECURITY AGREEMENT

Exhibit 10.4

AMENDMENT NO. 4 TO

LOAN AND SECURITY AGREEMENT

AMENDMENT NO. 4 TO LOAN AND SECURITY AGREEMENT (this “Fourth Amendment”) dated as of January 27, 2005 by and among Lexington Precision Corporation, a Delaware corporation (“LPC”) and Lexington Rubber Group, Inc., a Delaware corporation (“LRG”, and together with LPC, each, individually, a “Borrower” and collectively, “Borrowers”), the lenders party to the Loan Agreement (as hereinafter defined) (each individually, a “Lender” and collectively, “Lenders”) and Ableco Finance LLC, a Delaware limited liability company, in its capacity as agent for Lenders (in such capacity, “Agent”).

WITNESSETH

WHEREAS, Borrowers, Agent and Lenders have entered into financing arrangements pursuant to which Lenders have made loans to Borrowers as set forth in the Loan and Security Agreement, dated December 18, 2003, by and among Borrowers, Agent and Lenders (as heretofore amended or otherwise modified, as amended hereby, and as the same may hereafter be further amended, modified, supplemented, extended, renewed, restated or replaced, the “Loan Agreement”) and the other agreements, documents and instruments referred to therein or at any time executed and/or delivered in connection therewith or related thereto, including this Fourth Amendment (all of the foregoing, including the Loan Agreement, as the same now exist or may hereafter be further amended, modified, supplemented, extended, renewed, restated or replaced, being collectively referred to herein as the “Financing Agreements”); and

WHEREAS, Borrowers have requested that Agent and Lenders agree to certain amendments to the Loan Agreement and Agent and Lenders are willing to agree to the requested amendments, subject to the terms and conditions contained herein.

NOW, THEREFORE, in consideration of the mutual conditions and agreements and covenants set forth herein, and for other good and valuable consideration, the adequacy and sufficiency of which is hereby acknowledged, the parties hereto agree as follows:

Section 1. Definitions.

1.1. Defined Terms. For purposes of this Fourth Amendment, unless otherwise defined herein, all terms used herein, including, but not limited to, those terms used and/or defined in the recitals above, shall have the respective meanings assigned to such terms in the Loan Agreement.

1.2. Additional Definitions. As used herein, the following terms shall have the respective meanings given to them below and the Loan Agreement shall be deemed and is hereby amended to include, in addition and not in limitation, each of the following definitions:

(a) “Fourth Amendment” shall mean Amendment No. 4 to Loan and Security Agreement, dated as of January 27, 2005, by and among the Borrowers, the Agent and the Lenders.

(b) “Fourth Amendment Effective Date” shall mean the date the Fourth Amendment becomes effective.

Section 2. Amendments to the Loan Agreement.

2.1. Borrowing Base. The definition of the term “Borrowing Base” set forth in Section 1.14 of the Loan Agreement is hereby amended in its entirety to read as follows:

“1.14 “Borrowing Base” shall mean the term “Borrowing Base” as defined, together with the terms used therein, in the Working Capital Loan Agreement as in effect on the Fourth Amendment Effective Date.”

2.2. Excess Availability. The definition of the term “Excess Availability” set forth in Section 1.40 of the Loan Agreement is hereby amended in its entirety to read as follows:

“1.40 “Excess Availability” shall mean the term “Excess Availability” as defined in the Working Capital Loan Agreement as in effect on the Fourth Amendment Effective Date.”

2.3. Reserves. The definition of the term “Reserves” set forth in Section 1.100 of the Loan Agreement is hereby amended in its entirety to read as follows:

“1.100 “Reserves” shall mean the term “Reserves” as defined in the Working Capital Loan Agreement as in effect on the Fourth Amendment Effective Date.”

2.4. Special Reserve. The definition of the term “Special Reserve” set forth in Section 1.107 of the Loan Agreement is hereby amended in its entirety to read as follows:

“1.107 “Special Reserve” shall mean the term “Special Reserve” as defined in the Working Capital Loan Agreement as in effect on the Fourth Amendment Effective Date.”

2.5. WC Term Loans. The definition of the term “WC Term Loans” set forth in Section 1.113 of the Loan Agreement is hereby amended in its entirety to read as follows:

“1.113 “WC Term Loans” shall mean the term “Term Loans” as defined in the Working Capital Loan Agreement as in effect on the Fourth Amendment Effective Date.”

2.6. Indebtedness. Clause (i) of Section 9.9(e) of the Loan Agreement is hereby amended in its entirety to read as follows:

“(i) the principal amount of such Indebtedness shall not exceed the sum of (A) the lesser of (1) $20,000,000 and (2) 100% of the Borrowing Base, plus (B) the Term Loans (as defined in the Working Capital Loan Agreement as in effect on the Fourth Amendment Effective Date) in an amount equal to $11,400,000 as reduced from time to time by the principal payments and prepayments thereof, whether optional or mandatory;”

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2.7. Financial Covenants.

(a) Section 9.17 of the Loan Agreement is hereby amended in its entirety to read as follows:

“9.17 Leverage Ratio. Borrowers and their Subsidiaries, on a consolidated basis, shall, not permit the ratio of consolidated secured Indebtedness (including letters of credit) to consolidated EBITDA as of the end of each trailing twelve month period of Borrowers and their Subsidiaries for which the last month ends on a date set forth below to be greater than the applicable ratio set forth below:

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(b) As of December 1, 2004, Section 9.18 of the Loan Agreement is hereby amended in its entirety to read as follows:

“9.18 Minimum EBITDA . (a) Borrowers and their Subsidiaries, on a consolidated basis, shall, at all times have, and shall maintain, EBITDA, measured on a quarter-end basis, of at least the required amount set forth in the following table for the applicable period set forth opposite thereto:

(b) Borrowers and their Subsidiaries, on a consolidated basis, shall, at all times have, and shall maintain, Rubber Group EBITDA, measured on a quarter-end basis, of at least the required amount set forth in the following table for the applicable period set forth opposite thereto:

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(c) Section 9.19 of the Loan Agreement is hereby amended in its entirety to read as follows:

“9.19 Fixed Charge Coverage Ratio . Borrowers and their Subsidiaries, on a consolidated basis, shall, at all times have, and shall maintain, a Fixed Charge Coverage Ratio, measured on a quarter-end basis, of at least the required amount set forth in the following table for the applicable period set forth opposite thereto:

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Section 3. Representations and Warranties. In addition to the continuing representations, warranties and covenants heretofore or hereafter made by each Borrower to Agent and Lenders pursuant to the other Financing Agreements, Borrowers, jointly and severally, hereby represent, warrant and covenant with and to Agent and Lenders as follows (which representations, warranties and covenants are continuing and shall survive the execution and delivery hereof and shall be incorporated into and made a part of the Financing Agreements):

3.1. Corporate Power and Authority. This Fourth Amendment and each other agreement or instrument to be executed and delivered by each Borrower have been duly authorized, executed and delivered by all necessary action on the part of such Borrower which is a party hereto and thereto and, if necessary, its stockholders, and is in full force and effect as of the date hereof, as the case may be, and the agreements and obligations of each Borrower contained herein and therein constitute legal, valid and binding obligations of such Borrower enforceable against it in accordance with their terms except as such enforceability may be limited by (a) bankruptcy, insolvency, reorganization, moratorium or similar laws of general applicability affecting the enforcement of creditors’ rights and (b) the application of general principles of equity (regardless of whether such enforceability is considered in a proceeding in equity or at law).

3.2. Consents: Approvals. No action of, or filing with, or consent of any Governmental Authority is required to authorize, or is otherwise required in connection with, the execution, delivery and performance of this Fourth Amendment other than the filing of a Report on Form 8-K pursuant to the Exchange Act.

3.3. No Event of Default. No Event of Default, and no condition or event which, with the giving of notice or lapse of time, or both, would constitute an Event of Default, exists or has occurred and is continuing after giving effect to the provisions of this Fourth Amendment. All of the representations and warranties set forth in the Loan Agreement and the other Financing Agreements, are true and correct in all respects on and as of the date hereof as if made on the date hereof, except to the extent any such representation or warranty is made as of a specified date, in which case such representation or warranty shall have been true and correct as of such date.

Section 4. Conditions Precedent. This Fourth Amendment shall be effective as of the date hereof but only upon the satisfaction of each of the following conditions precedent in a manner satisfactory to Agent:

4.1. Agent shall have received an original of this Fourth Amendment, duly authorized, executed and delivered by Borrowers;

4.2. Agent shall have received a fully-executed copy of Amendment No. 4 to the Working Capital Loan Agreement, the form and substance of which shall be satisfactory to Agent;

4.3. Agent shall have received a fully-executed copy of an amendment to the Intercreditor Agreement between Agent and Working Capital Agent (and acknowledged and agreed to by Borrowers), in form and substance satisfactory to Agent;

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4.4. the Working Capital Agent and the Working Capital Lenders shall have consented to this Fourth Amendment and the amendments to the Loan Agreement set forth herein;

4.5. no Default or Event of Default shall exist or have occurred and be continuing; and

4.6. all legal matters incident to this Fourth Amendment shall be satisfactory to the Agent and its counsel.

Section 5. Consent to Working Capital Amendment. The Agent and the Lenders hereby acknowledge that the Borrowers are entering into an amendment to the Working Capital Lender Agreements on the terms set forth in that certain Amendment No. 4 to Amended and Restated Loan and Security Agreement, dated as of the date hereof, among the Borrowers, the Working Capital Agent and the Working Capital Lenders, and consent thereto for all purposes in accordance with the provisions of Section 9.9(e)(v) of the Loan Agreement.

Section 6. Events of Default.

6.1. No Waiver of Any Events of Default. Except as agreed to in writing by Agent prior to the date hereof, Agent has not waived and is not by this Fourth Amendment waiving, and has no present intention of waiving, any Events of Default, which may have occurred prior to the date hereof, or may be continuing on the date hereof or any Event of Default which may occur after the date hereof. Agent reserves the right, in its discretion, to exercise any or all of its rights and remedies arising under the Financing Agreements or otherwise, as a result of any Events of Default which may have occurred prior to the date hereof, or are continuing on the date hereof, or any Event of Default which may occur after the date hereof.

6.2. Additional Events of Default. The parties hereto acknowledge, confirm and agree that the failure of any Borrower to comply with the covenants, conditions and agreements contained herein or in any other agreement, document or instrument at any time executed by any Borrower in connection herewith shall in each case constitute an Event of Default under the Financing Agreements.

Section 7. Miscellaneous.

7.1. Effect of this Fourth Amendment. Except as modified pursuant hereto, no other changes or modifications to the Financing Agreements are intended or implied and in all other respects the Financing Agreements are hereby specifically ratified, restated and confirmed by all parties hereto as of the effective date hereof. To the extent of conflict between the terms of this Fourth Amendment and the other Financing Agreements, the terms of this Fourth Amendment shall control. The Loan Agreement and this Fourth Amendment shall be read and construed as one agreement.

7.2. Governing Law. The rights and obligations hereunder of each of the parties hereto shall be governed by and interpreted and determined in accordance with the internal laws of the State of New York but excluding any principles of conflicts of law or other

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rule of law that would cause the application of the law of any jurisdiction other than the laws of the State of New York.

7.3. Binding Effect. This Fourth Amendment shall be binding upon and inure to the benefit of each of the parties hereto and their respective successors and assigns.

7.4. Further Assurances. The parties hereto shall execute and deliver such additional documents and take such additional action as may be necessary to effectuate the provisions and purposes of this Fourth Amendment.

7.5. Counterparts. This Fourth Amendment may be executed in any number of counterparts, but all of such counterparts shall together constitute but one and the same agreement. In making proof of this Fourth Amendment, it shall not be necessary to produce or account for more than one counterpart hereof signed by each of the parties hereto. Delivery of an executed counterpart of this Fourth Amendment by facsimile or electronic mail shall have the same force and effect as delivery of an original executed counterpart of this Fourth Amendment. Any party delivering an executed counterpart of this Fourth Amendment by facsimile or electronic mail also shall deliver an original executed counterpart of this Fourth Amendment, but the failure to deliver an original executed counterpart shall not affect the validity, enforceability, and binding effect of this Fourth Amendment as to such party or any other party hereto.

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IN WITNESS WHEREOF, Agent, Lenders and Borrowers have caused this Fourth Amendment to be duly executed as of the day and year first above written.