Patent ID: 6838512

Claim:
A cold shrink article including a fluoroelastomer composition comprising: a first terpolymer comprising tetrafluoroethylene, hexafluoropropylene and vinylidene difluoride, said first terpolymer having a first weight average molecular weight centered from about 10 7 to about 10 8 ; a second terpolymer comprising tetrafluoroethylene, hexafluoropropylene and vinylidene difluoride, said second terpolymer having a second weight average molecular weight centered at about 10 4 , said first terpolymer combined with said second terpolymer to provide a mixed terpolymer; a processing aid in an amount from about 0.5 parts to about 2 parts per 100 parts of said mixed terpolymer; a filler in an amount from about 2 parts to about 15 parts per 100 parts of said mixed terpolymer; an oil in an amount of 10 parts or less per 100 parts of said mixed terpolymer; and a curative; said fluoroelastomer composition upon curing at an elevated temperature provides said cold shrink article having a permanent set value of 21% or less.