ACRYLIC RUBBER

摘要

Provided is an acrylic rubber composition which gives a vulcanizate having excellent heat resistance, in particular, having an excellent balance between the retention of tensile strength and the retention of elongation after heat aging. Also provided are a hose part, a sealing part, and a vibration-damping rubber part each obtained from the composition. The acrylic rubber composition contains an acrylic rubber obtained by copolymerizing 100 parts by mass of an alkyl acrylate with 10-100 parts by mass of an alkyl methacrylate and 0.5-4 parts by mass of a crosslinkable monomer. The alkyl methacrylate preferably is at least one compound selected from the group consisting of methyl methacrylate, ethyl methacrylate, and n-butyl methacrylate. The alkyl acrylate preferably is at least one compound selected from the group consisting of methyl acrylate, ethyl acrylate, and n-butyl acrylate.