| abstract |
A nitrile rubber composition comprising a carboxyl group-containing highly saturated nitrile rubber (a) containing α,β-ethylenically unsaturated nitrile monomer units in a ratio of 5 to 60 wt% and having an iodine value of 120 or less, a filler (b), and a polyamine-based cross-linking agent (c), wherein a content of the filler (b) is 100 parts by weight or more and less than 200 parts by weight with respect to 100 parts by weight of the carboxyl group-containing highly saturated nitrile rubber (a). According to the present invention, a nitrile rubber composition able to give a cross-linked rubber with excellent in original state physical properties, compression set resistance, and sour gasoline resistance and small in tension set is provided. |