| 摘要 |
PURPOSE: Provided is a rubber for an automobile engine oil filter packing which is improved in heat resistance, cold resistance and durability and is reduced in thermal curing of an oil filter packing, leakage and the generation of crack. CONSTITUTION: The rubber contains carbon black, a reinforcement, a process oil, an antioxidant, a softener and a curing agent as an additive, and comprises an inner rubber layer which comprises 1-100 parts by weight of super-clay and 1-10 parts by weight of an antioxidant based on 100 parts by weight of an acryl rubber, and an outer rubber layer which comprises 1-100 parts by weight of super-clay and 1-10 parts by weight of an antioxidant based on 100 parts by weight of a silicone rubber, and the two layers are adhered by curing. Preferably the acryl rubber contains 34-43 % of acryl and 1.0-9.0 % of sulfur; and the silicone rubber contains 70-90 % of silicon and 10-30 % of hydrocarbon.
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