Document:

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                                                                  Exhibit 10-100

                 AMENDMENT NO. 5 TO LOAN AND SECURITY AGREEMENT

                  This Amendment No. 5 (the "Amendment") dated as of December
31, 1999, to Loan and Security Agreement by and between THE CIT GROUP/EQUIPMENT
FINANCING, INC. ("Lender"), and Lexington Precision Corporation ("LPC").

                  WHEREAS, Lender and LPC are parties to a Loan and Security
Agreement dated as of March 19, 1997, including Rider A thereto (the
"Agreement").

                  WHEREAS, LPC and Lender desire to amend the Agreement as
provided herein.

                  NOW, THEREFORE, in consideration of the premises and the
mutual promises contained herein and for other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged by the parties
hereto, the parties hereto hereby agree as follows:

                  1. Capitalized terms used herein, unless otherwise defined
herein, shall have the meanings ascribed thereto in the Agreement.

                  2. The definition of Cash Flow Coverage Ratio in Section 1 of
Rider A to the Agreement is hereby amended in its entirety to read as follows:

                  "Cash Flow Coverage Ratio": with respect to Debtor shall mean
                  as of any date, the sum of Debtor's net income, depreciation
                  and amortization for its four most recent fiscal quarters less
                  its dividends paid during such period divided by the current
                  portion of its long term debt, other than its 12.75% senior
                  subordinated notes due February 1, 2000 in the original
                  principal amount of $31,720,125.00, its 14% junior
                  subordinated notes due May 1, 2000, in the original principal
                  amount of $346,666.67, its 14% junior subordinated convertible
                  increasing rate notes due May 1, 2000, in the original
                  principal amount of $1,000,000.00, its 10.5% senior unsecured
                  note due February 1, 2000, in the original principal amount of
                  $7,500,000.00, the 12% mortgage note of its wholly-owned
                  subsidiary, Lexington Rubber Group, Inc., formerly known as
                  Lexington Components, Inc. ("LCI"), due January 31, 2000, in
                  the original principal amount of $1,370,015.65 and that
                  portion of the term loans payable by LCI or LPC to Bank One
                  Akron, N.A., Congress Financial Corporation, or Lender that is
                  not scheduled to be repaid within one year after the date of
                  the financial statements with respect to which the calculation
                  of the Cash Flow Coverage Ratio is being made but nevertheless
                  is classified as a current liability solely because of
                  defaults on Indebtedness other than Indebtedness payable to
                  Lender; provided, that for the purposes of this calculation
                  the Debtor's results of operations shall exclude any
                  write-down or write-off of assets (whether tangible or
                  intangible) of any manufacturing facility or business unit of
                  the Debtor which is recorded by Debtor as a result of the
                  restructuring, relocation, shut-down or sale of such
                  manufacturing facility or business unit or as a result of
                  compliance with Financial Accounting Standard No. 121,
                  Accounting for the Impairment of Long-Lived Assets and for
                  Long-Lived Assets to be Disposed of.

                  3. Except as specifically amended herein, the Agreement
remains in effect in accordance with its terms.
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                                      -2-

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed and delivered by their respective duly authorized
officers as of the day and year first written above

                       THE CIT GROUP/EQUIPMENT FINANCING, INC.

                       By: /s/ Anthony Joseph
                           ---------------------------------------

                       Title:  Vice President
                              ------------------------------------

                       LEXINGTON PRECISION CORPORATION

                       By: /s/ Dennis J. Welhouse
                           ---------------------------------------
                               Dennis J. Welhouse
                               Senior Vice President and Chief Financial Officer<PAGE>   1
                                                                  Exhibit 10-101

            AMENDMENT NO. 8 TO CREDIT FACILITY AND SECURITY AGREEMENT

                  This Amendment No. 8 (the "Amendment") dated as of December
31, 1999 to Credit Facility and Security Agreement by and between Bank One,
N.A.("Lender"), Lexington Precision Corporation ("LPC") and Lexington
Components, Inc ("LCI").

                  WHEREAS, Lender, LPC, and LCI are parties to a Credit Facility
and Security Agreement dated as of January 31,1997, including Rider A thereto
(the "Agreement").

                  WHEREAS, LPC, LCI, and Lender desire to amend the Agreement as
provided herein.

                  NOW, THEREFORE, in consideration of the premises and the
mutual promises contained herein and for other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged by the parties
hereto, the parties hereto hereby agree as follows:

                  1. Capitalized terms used herein, unless otherwise defined
herein, shall have the meaning ascribed thereto in the Agreement.

                  2. The definition of Cash Flow Coverage Ratio in Section 1 of
Rider A to the Agreement is hereby amended in its entirety to read as follows:

                  "Cash Flow Coverage Ratio": The ratio of cash flow to debt
                  service as of any date, calculated as net income plus
                  depreciation and amortization for the four most recently
                  completed fiscal quarters minus dividends paid during such
                  periods divided by current maturities of all long-term debt,
                  other than the twelve and three-quarter percent (12.75%)
                  senior subordinated notes of LPC due February 1, 2000 in the
                  original principal amount of THIRTY-ONE MILLION SEVEN HUNDRED
                  TWENTY THOUSAND ONE HUNDRED TWENTY-FIVE AND NO/100 DOLLARS
                  ($31,720,125.00), the fourteen percent (14%) junior
                  subordinated notes of LPC due May 1, 2000, in the original
                  principal amount of THREE HUNDRED FORTY-SIX THOUSAND SIX
                  HUNDRED SIXTY-SIX DOLLARS AND SIXTY-SEVEN CENTS ($346,666.67),
                  the fourteen percent (14%) junior subordinated convertible
                  increasing rate notes of LPC due May 1, 2000, in the original
                  principal amount of ONE MILLION AND NO/100 DOLLARS
                  ($1,000,000.00), the ten and one-half percent (10.5%) senior
                  unsecured note of LPC due February 1, 2000, in the original
                  principal amount of SEVEN MILLION FIVE HUNDRED THOUSAND AND
                  NO/100 DOLLARS ($7,500,000.00), the twelve percent (12%)
                  mortgage note of LPC's wholly-owned subsidiary, Lexington
                  Rubber Group, Inc., formerly known as Lexington Components,
                  Inc. ("LCI"), due January 31, 2000, in the original principal
                  amount of ONE MILLION THREE HUNDRED SEVENTY THOUSAND FIFTEEN
                  AND 65/100 DOLLARS ($1,370,015.65) and that portion of the
                  secured term loans payable by LCI or LPC to Congress Financial
                  Corporation, The CIT Group/Equipment Financing, Inc., or
                  Lender that is not scheduled to be repaid within one year
                  after the date of the financial statements with respect to
                  which the calculation of the Cash Flow Coverage Ratio is being
                  made but nevertheless is classified as a current liability
                  solely because of defaults on Indebtedness other than
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                  Indebtedness payable to Lender; provided, however, that for
                  the purposes of this calculation the Borrowers' results of
                  operations for any four fiscal quarters shall exclude any
                  write-down or write-off of assets (whether tangible or
                  intangible) of any manufacturing facility or business unit of
                  the Borrowers which is recorded by Borrowers as a result of
                  the restructuring, relocation, shutdown or sale of such
                  manufacturing facility or business unit or as a result of
                  compliance with Financial Accounting Standard No. 121,
                  Accounting for the Impairment of Long-Lived Assets and for
                  Long-Lived Assets to be Disposed of.

                  3. Except as specifically amended herein, the Agreement
remains in effect in accordance with its terms.

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed and delivered by their respective duly authorized
officers as of the day and year first written above.

                                  Bank One, NA

                                  By: /s/ Rudolf G. Bentlage
                                      -------------------------------

                                  Title:  Vice President
                                         ----------------------------

                                  LEXINGTON PRECISION CORPORATION

                                  By: /s/ Dennis J. Welhouse
                                      -------------------------------
                                          Dennis J. Welhouse
                                          Senior Vice President and
                                          Chief Financial Officer

                                  LEXINGTON COMPONENTS, INC.

                                  By: /s/ Dennis J. Welhouse
                                      -------------------------------
                                          Dennis J. Welhouse
                                          Senior Vice President and
                                          Chief Financial Officer

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