Patent ID: 7919554
Filing Date: 2011-04-05
Classification: B82Y,C09K,E21B

Abstract:
1. A heat-resistant seal material comprising: 100 parts by weight of a ternary fluoroelastomer; 1 to 30 parts by weight of vapor-grown carbon fibers having an average diameter of more than 30 nm and 200 nm or less; and carbon black having an average particle diameter of 25 to 500 nm, the heat-resistant seal material containing the vapor-grown carbon fibers and the carbon black in an amount of 20 to 40 parts by weight in total, and having a compression set when subjected to a compression set test at a compression rate of 25% and a temperature of 200° C. for 70 hours of 0 to 15% and a dynamic modulus of elasticity at 200° C. (E′/200° C.) of 30 to 100 MPa.