Silicone composition, elastic revolution body and fixing device using the composition

A silicone composition comprising:

• (A) a dimethylpolysiloxane having a vinyl group, a methylhydrogen polysiloxane and a platinum-based catalyst;
• (B) a reactive group-containing modified silicic acid powder of which surface has been modified with (i) a compound selected from the group consisting of (a) an alkylsilane, (b) a hexamethyldisilazane, (c) a dimethylsilicone oil and (d) a mixture thereof, and (ii) an unsaturated group-containing silane compound, followed by drying;
• and
• (C) an inorganic fine powder impregnated with a surfactant, said inorganic fine powder having a pore diameter of 0.01 to 30 microns, an average particle size of 5 to 70 microns and an oil absorption of 200-800 ml/100 g, wherein said surfactant is a fluorine-containing surfactant selected from the group consisting of fluorinated alkyl esters, perfluoroalkylpolyoxyethylene ethanol, perfluoroalkylcarboxylic acid salts, perfluoroalkylammonium salts, perfluoroalkylbetaine, perfluoroalkylamine oxide, perfluoroalkylethylene oxide adducts, perfluoroalkyl phosphates, nondissociative perfluoroalkyl compounds and perfluoro-ethylene oxide adducts, or a silicone-containing surfactant selected from the group consisting of polyether-modified silicone oil, epoxypolyether-modified silicone oil, alkylaralkyl-polyether-modified silicone oil and amino-modified silicone oil.