Document:

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                                      NOTE

$22,500,000.00                                                   August 12, 2003

     FOR VALUE RECEIVED, the undersigned (the "Borrower"), hereby promises to
pay to WACHOVIA BANK, NATIONAL ASSOCIATION or registered assigns (the "Lender"),
in accordance with the provisions of the Agreement (as hereinafter defined), the
principal amount of each Loan from time to time made by the Lender to the
Borrower under that certain Credit Agreement, dated as of August 12, 2003 (as
amended, restated, extended, supplemented or otherwise modified in writing from
time to time, the "Agreement;" the terms defined therein being used herein as
therein defined), among the Borrower, the Lenders from time to time party
thereto, and Bank of America, N.A., as Administrative Agent, L/C Issuer and
Swing Line Lender.

     The Borrower promises to pay interest on the unpaid principal amount of
each Loan from the date of such Loan until such principal amount is paid in
full, at such interest rates and at such times as provided in the Agreement.
Except as otherwise provided in Section 2.04(f) of the Agreement with respect to
Swing Line Loans, all payments of principal and interest shall be made to the
Administrative Agent for the account of the Lender in the currency in which such
Committed Loan was denominated and in Same Day Funds at the Administrative
Agent's Office for such currency. If any amount is not paid in full when due
hereunder, such unpaid amount shall bear interest, to be paid upon demand, from
the due date thereof until the date of actual payment (and before as well as
after judgment) computed at the per annum rate set forth in the Agreement.

     This Note is one of the Notes referred to in the Agreement, is entitled to
the benefits thereof and may be prepaid in whole or in part subject to the terms
and conditions provided therein. This Note is also entitled to the benefits of
the Guaranty and is secured by the Collateral. Upon the occurrence and
continuation of one or more of the Events of Default specified in the Agreement,
all amounts then remaining unpaid on this Note shall become, or may be declared
to be, immediately due and payable all as provided in the Agreement. Loans made
by the Lender shall be evidenced by one or more loan accounts or records
maintained by the Lender in the ordinary course of business. The Lender may also
attach schedules to this Note and endorse thereon the date, amount, currency and
maturity of its Loans and payments with respect thereto.

     The Borrower, for itself, its successors and assigns, hereby waives
diligence, presentment, protest and demand and notice of protest, demand,
dishonor and non-payment of this Note.

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     THIS NOTE SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF
THE STATE OF NEW YORK.

                                                ARMOR HOLDINGS, INC.

                                                By:
                                                   -----------------------------
                                                Name: Phil Baratelli
                                                Title: Controller and Treasurer<PAGE>
                                                                     EXHIBIT 4.3

                               KAYDON CORPORATION

         4.0% CONTINGENT CONVERTIBLE SENIOR SUBORDINATED NOTES DUE 2023

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                          SUPPLEMENTAL INDENTURE NO. 1

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

                            SUNTRUST BANK, AS TRUSTEE

                           DATED AS OF AUGUST 18, 2003

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         SUPPLEMENTAL INDENTURE NO. 1, dated as of August 18, 2003, between
Kaydon Corporation, a Delaware corporation (the "Company"), and SunTrust Bank, a
bank and trust company organized under the laws of the State of Georgia (the
"Trustee"), relating to that certain Indenture, dated as of May 23, 2003 (the
"Indenture"), between the Company and the Trustee.

         WHEREAS, the Company has requested the Trustee to join it in amending
and supplementing the Indenture pursuant to Section 9.01(b) thereof in order to
correct certain omissions that do not adversely affect the rights of any Holders
(as defined in the Indenture) of the Company's 4.0% Contingent Convertible
Senior Subordinated Notes Due 2023 (the "Securities") and has furnished to the
Trustee an Officers' Certificate and Opinion of Counsel (as those terms are
defined in the Indenture) to the effect, among other things, that all conditions
precedent to the execution and delivery of this Supplement Indenture have been
satisfied in full; and

         WHEREAS, the Trustee has agreed to join the Company in executing this
Supplemental Indenture under the terms and conditions hereinafter set forth; and

         WHEREAS, capitalized terms used and not defined herein have the
meanings given to them in the Indenture.

Section 1. Section 3.09(c) of the Indenture is hereby amended to add the
following paragraph:

         "In connection with any Change in Control, the Company shall, within 30
         days following the occurrence of any Change in Control, obtain the
         consents under the instruments evidencing all Senior Indebtedness
         required to permit the repurchase of the Securities pursuant to a
         Change in Control Purchase Notice, or the Company shall repay in full
         all Indebtedness, and terminate all commitments, under all Senior
         Indebtedness the terms of which would prohibit the purchase of the
         Securities pursuant to a Change in Control Purchase Notice."

Section 2. Section 4.03 of the Indenture is hereby deleted in its entirety and
replaced with the following:

         "Section 4.03 Compliance Certificates. The Company shall deliver to the
         Trustee, promptly upon the Company obtaining knowledge of the
         occurrence of any Default or Event of Default hereunder an Officers'
         Certificate describing such Default or Event of Default and the nature
         and status thereof. In addition, the Company shall deliver to the
         Trustee within 120 days after the end of each fiscal year of the
         Company (beginning with the fiscal year ending on December 31, 2003),
         an Officers' Certificate, stating whether or not to the best knowledge
         of the signers thereof the Company is in default in the performance and
         observance of any of the terms, provisions and conditions of this
         Indenture (without regard to any period of grace or requirement of
         notice provided hereunder) and if the Company shall be in default,
         specifying all such Defaults and the nature and status thereof of which
         they may have knowledge.

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Section 3. Section 10.01(d) of the Indenture is hereby deleted in its entirety
and replaced with the following:

         "(d) the conversion of such Security occurs during the five Trading Day
         period immediately after a period of five consecutive Trading Days in
         which the Security Trading Price for each Trading Day in such period
         was less than 95% of the product of the Closing Price per share of
         Common Stock on such Trading Day multiplied by the number of shares of
         Common Stock issuable (assuming satisfaction of conditions to
         conversion) upon conversion of $1,000 in principal amount of the
         Securities; provided, that if on the date of any conversion pursuant to
         this subsection (d), the price of the Common Stock is greater than the
         Effective Conversion Price (as defined below) but less than 120% of the
         Effective Conversion Price, then Holders will receive, in lieu of
         shares of Common Stock based on the conversion rate, shares of Common
         Stock with a value equal to the principal amount of the Securities
         being converted, plus accrued but unpaid interest (including contingent
         interest), if any, as of the Conversion Date. Shares of Common Stock
         delivered upon such a conversion shall be valued at the greater of the
         Effective Conversion Price on the Conversion Date and the Closing Price
         as of the Conversion Date, and the Company shall deliver such shares of
         Common Stock no later than the third business day following the
         determination of the applicable stock price. For purposes of this
         Section 10.01(d), the term "Effective Conversion Price" shall mean as
         of any date of determination a dollar amount derived by dividing $1,000
         by the conversion rate then in effect (assuming a Conversion Date eight
         Trading Days prior to the date of determination."

Section 4. The following paragraph is added as Section 10.06(g):

         "(g) In case any Person other than the Company or a Subsidiary of the
         Company makes a payment in respect of a tender offer or exchange offer
         for shares of Common Stock in which, as of the closing date of the
         offer, the Company's board of directors is not recommending rejection
         of the offer, the Conversion Price will be adjusted as provided in
         subsection (d) above; provided, that such adjustment shall only be made
         if: (i) the tender offer or exchange offer is for an amount that
         increases the offeror's beneficial ownership of Common Stock to more
         than 25% of the total shares of Common Stock outstanding, and (ii) the
         cash and value of any other consideration included in the payment per
         share of Common Stock exceeds the Closing Price per share of Common
         Stock on the business day next succeeding the last date on which
         tenders or exchanges may be made pursuant to the tender or exchange
         offer. However, the adjustment referred to in this clause will not be
         made if as of the closing of the offer, the offering documents disclose
         a plan or an intention to cause us to engage in a consolidation or
         merger or a sale of all or substantially all of our assets."

Section 5. Section 10.06(e) is hereby deleted in its entirety and replaced with
the following:

         "(e) For the purpose of any computation under Section 10.06(b), (c) and
         (d) above and Section 10.06(g) below, the current market price per
         share of Common

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         Stock on any date shall be deemed to be the average of the Closing
         Prices per share of Common Stock for 20 consecutive Trading Days
         commencing 30 Trading Days before the record date with respect to any
         distribution, issuance or other event requiring such computation."

Section 6. In entering into this Supplemental Indenture No. 1, the Trustee shall
be entitled to the benefit of every provision of the Indenture relating to the
conduct of, affecting the liability of or affording protection to the Trustee,
whether or not elsewhere herein so provided.

Section 7. The Company agrees to pay the Trustee upon the execution and delivery
of this Supplemental Indenture No. 1 and thereafter upon receipt of a written
request therefor, fees and expenses of the Trustee incurred in connection with
this Supplemental Indenture No. 1 (including, without limitation, all attorney's
fees and expenses) in connection with the (i) review, negotiation and
preparation of this Supplemental Indenture No. 1 and any and all documents,
opinions, certificates and other papers prepared in connection herewith, (ii)
the administration or enforcement of the Indenture or this Supplemental
Indenture No. 1 and (iii) any administrative, judicial, arbitration or other
proceedings, or any investigations with respect thereto or in any way related to
this Supplemental Indenture No. 1.

Section 8. This Supplemental Indenture No. 1 shall be effective as of the date
first above written and upon the execution and delivery hereof by each of the
parties hereto.

Section 9. This Supplemental Indenture No. 1 shall be governed by, and construed
in accordance with, the laws of the State of New York.

Section 10. This Supplemental Indenture No. 1 may be executed in any number of
counterparts, each of which shall be an original, but such counterparts shall
together constitute but one and the same instrument.

Section 11. Except as specifically set forth herein, the terms and provisions of
the Indenture shall remain in full force and effect.

         IN WITNESS WHEREOF, the undersigned, being duly authorized, have
executed this Indenture on behalf of the respective parties hereto as of the
date first above written.

                                    KAYDON CORPORATION

                                    By: ____________________________
                                    Name: __________________________
                                    Title: ___________________________

                                    SUNTRUST BANK, as Trustee

                                    By: _____________________________
                                    Name:___________________________
                                    Title: ____________________________

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