Cross-linked rubber products and friction drive belts are obtained by using this product.

Abstract

Cross-linked rubber formulations consist of: a primary polymer rubber component which is an ethylene-α-olefin elastomer with an ethylene content of less than 60% by weight, and a secondary polymer which is an ethylene-α-olefin elastomer with an ethylene content of 60% by weight or greater; Short fibers are dispersed in the rubber component. The rubber component is cross-linked by using organic peroxides as crosslinking agents. The content of organic peroxides in the cross-linked sour rubber composition is 1 part by weight or greater and 10 parts by weight or less than 100 parts by weight of the rubber component.