| abstract |
A rubber composition having a reduced adhesion to the surface of a kneading machine, particularly an open roll kneading machine, in consideration of keading processability, the rubber composition comprising 20 to 60 parts by weight of carbon black having a DBP oil absorption of 100 ml/100 g or more and an iodine value of 75 to 90 g/kg based on 100 parts by weight of an ethylene/butene/5-ethylidene-2-norbornene terpolymer. Stable and safe productivity of the rubber composition can be obtained, and the rubber composition is effectively used for seal parts, for which a high pressure gas sealing function is particularly required in a low temperature environment, e.g., -30 to -60°C. |