Vulcanizable rubber composition and hose

摘要

A vulcanizable rubber composition comprising (1) a hydrogenated product of an unsaturated nitrile-conjugated diene-unsaturated carboxylic acid ester copolymer, (2) an ultrafine magnesium silicate powder having an average particle diameter of not larger than 10 mu m and (3) a vulcanizer. This rubber composition gives a vulcanizate having good resistance to hydrofluorocarbon gas transmission and good cold resistance, and is useful for a hose for hydrofluorohydrocarbon gas.