| 摘要 |
A fluoropolyether base rubber composition comprising (A) a linear fluoropolyether compound containing at least two alkenyl groups and having a perfluoroalkyl ether structure in its backbone, (B) a surface hydrophobized silica filler having a specific surface area of at least 100 m<2>/g and a vinyl content of 1x10<-3 >to 2x10<-2 >mol/100 g, (C) a curing amount of an organosilicon compound having at least two SiH groups, and (D) a hydrosilylation catalyst is curable into products having improved compression set as well as water repellency, oil repellency, solvent resistance, chemical resistance and weather resistance and finding typical use as O-rings.
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