Patent ID: 8168714

Claim:
A (per)fluoroelastomeric composition curable by peroxidic way, comprising for 100 phr of (per)fluoroelastomer: as filler, 0.5-50 phr of silica having a pH value, determined according to the DIN ISO 787-9 standard, higher than 7; as crosslinking agent, from 0.5 to 10 phr of a bis-olefin having general formula: wherein: R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , equal to or different from each other, are H or C 1 -C 5 alkyls; Z is selected from a C 1 -C 18 linear or branched alkylene or cycloalkylene radical, optionally containing oxygen atoms or a (per)fluoropolyoxyalkylene radical.