The curable silicone composition

PURPOSE:To provide a curable silicone composition capable of providing rubber elastomers, excellent in solvent and chemical resistance and water and oil repellency and having low moisture permeability by curing. CONSTITUTION:A curable silicone composition is obtained by blending (A) an aliphatic unsaturated group-containing fluorocarbonsiloxane expressed by formula I {R and R are (substituted) monofunctional hydrocarbon; R is 1-8C monofunctnonal hydrocarbon; Rf is bifunctional perfluoroalkylene, etc., expressed by formula II [n is 0-8; m and l are 0-5; j and k are 0 or 1; (1+m+n+j+k) is 11-30]; a is 2-300; b is 0-300; c is 0-5000; p is 2-8; X is triorganosilyl expressed by formula III (R is (substituted) monofunctional hydrocarbon having aliphatic unsaturated bond; R and R are 1-8C monofunctional hydrocarbon} with (B) an Si-H group-containing fluorocarbonsiloxane expressed by formula TV (R is 1-8C hydrocarbon; x and y are O-2) in an amount so as to provide 0.5-5mol groups Si-H based on 1mol aliphatic unsaturated groups in the composition and (C) a platinum family metallic catalyst.