CRD C542-79 Sealing Compound: Silicone Rubber Base (for
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CRD C542-79 Interim Federal Specification Sealing Compound: Silicone Rubber Base (for Calking, Sealing and Glazing in Buildings and Other Structures) (TT-S-001543A) Note from Webmaster: TT-S-001543A was replaced by Revision B. Notice 1 was issued to cancel Revision B.