Patent ID: 8765876

Claim:
A curable composition comprising: A) a fluoroelastomer comprising copolymerized units of a nitrile group-containing cure site monomer; and B) a hydrazide of the general formula R 1 (C(O)) n NHNHR 2 , wherein said oxygen atom may optionally be replaced with a sulfur atom and wherein n is 1 or 2; R 1 is NH 2 , NHNH 2 , NHR 3 , NR 3 2 , NHNHR 2 , or NHC(O)NHNH 2 ; R 2 is H, CO 2 R 3 , CH 2 R 4 or C(O)R 4 ; R 3 is alkyl, aryl, heterocycle, or CH 2 R 4 ; and R 4 is a fluoroalkyl group.