Patent ID: 8232341

Claim:
A rubber composition comprising: an ethylene/α-olefin/non-conjugated polyene copolymer [A] that satisfies (a) to (e) below: (a) the copolymer is a copolymer of ethylene, an a-olefin, and a non-conjugated polyene, (b) the α-olefin has 3 to 20 carbon atoms, (c) the weight ratio of ethylene unit/α-olefin unit is 35/65 to 95/5, (d) the iodine value is in the range of 0.5 to 50, and (e) the intrinsic viscosity [η] is 0.01 to 5.0 dl/g as measured in a decalin solution at 135° C.; carbon black [B] having an amount of iodine adsorption of 80 mg/g or less, an average particle diameter of 250 nm or less, and an amount of DBP absorption of 10 to 300 CM 3 /100 g; and surface-modified silica [C] that is obtained by subjecting precipitated silica to surface modification and has a BET specific surface area of 30 to 80 m 2 /g, a particle diameter of 1.0 to 4.0 μm as measured by the Coulter counter method, and an M value of 50 or more.