VULCANIZABLE RUBBER COMPOSITION, SEAL TO BE USED IN DYNAMIC STATE, AND MATERIAL THEREFOR

摘要

A vulcanizable rubber composition comprising 100 wt. parts of a highly saturated nitrile copolymer rubber having an iodine value not larger than 80, 3-30 wt. parts of a reinforcing filler, 30-200 wt. parts of an oxide of a metal of group 2 of the periodic table, 30-200 wt. parts of a non-reinforcing filler, and 0.1-20 wt. parts of a vulcanizer. A sealing material comprised of a vulcanizate of the vulcanizable rubber composition and having friction coefficient ( mu ) not larger than 1.5 and an abrasion wear of 150-350 mg. A seal comprising the sealing material and a reinforcing ring. <IMAGE>