| 摘要 |
A hydrogenated NBR composition, which comprises 100 parts by weight of a blend of a hydrogenated NBR having an acrylonitrile content of 25-44% by weight and an iodine number of 32-65, with such an amount of an NBR as to make the iodine number of the blend of 40-160, 2-23 parts by weight of an ester-based plasticizer, and 0.5-10 parts by weight of an organic peroxide, preferably which further contains 0.5-10 parts by weight of a polyfunctional, unsaturated compound, has a distinguished cost performance because of blending an expensive hydrogenated NBR with a cheap NBR, can give cross-linked products having a distinguished oil resistance (resistance to such oil as No. 3 oil and other general-purpose, commercially available engine oil, etc.) and a distinguished fuel oil resistance (resistance to such fuel oil as fuel oil C, and other general-purpose, commercially available gasoline, etc.) and thus can serve as suitable molding materials for intake manifold gaskets of automobile engine or automobile sealing parts, particularly sealing parts around engines and transmission systems.
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