<p>Disclosed is a rubber composition comprising 85 to 55 wt.% of copolymer rubber and 15 to 45 wt.% of chloroprene rubber, wherein the copolymer rubber comprises 10 to 60 mole % of epichlorohydrin, 30 to 90 mole % of propylene oxide or of propylene oxide and ethylene oxide and 0 to 15 mole % of unsaturated epoxide.</p>
