| abstract |
A hydrogenated nitrile rubber-metal laminate having distinguished heat and rubber bulging resistances at elevated temperatures and surface pressures, which comprises a metallic sheet subjected to a hexavalent Cr ions-free chemical conversion treatment, a defatting treatment, a surface-roughening treatment, a primer treatment, or a combination of the treatment, and an adhesive layer and a rubber layer successively laid on one or both surfaces of the metallic sheet, wherein the rubber layer is a vulcanizate of a hydrogenated nitrile rubber compound comprising 100 parts by weight of a hydrogenated nitrile rubber, 50-250 parts by weight of an inorganic filler containing not more than 20% by volume, on the basis of total compound, of a non-reinforcing inorganic filler having an average particle size of not more than 5 μm, 4-20 parts by weight of an organic peroxide, and preferably furthermore 2-10 parts by weight of N,N′-phenylene dimaleimide. |