EXHIBIT 4.3 KAYDON CORPORATION 4.0% CONTINGENT CONVERTIBLE SENIOR SUBORDINATED NOTES DUE 2023 SUPPLEMENTAL INDENTURE NO. 1 SUNTRUST BANK, AS TRUSTEE DATED AS OF AUGUST 18, 2003 SUPPLEMENTAL INDENTURE NO. 1, dated as of August 18, 2003, between Kaydon...Supplemental Indenture • August 18th, 2003 • Kaydon Corp • Ball & roller bearings
