... -40 centigrade to 160 centigrade.2.The function of rubber seal: Rubber seal could stop air, water and dust enter the ... .4. The kinds of rubber seal: There are solid rubber seal, sponge rubber seal, hollow rubber seal and composite rubber seal.5. Production technics ... to make surface smooth and , good elasticity, good foam evenly, waterproof performance of first-class, anti-ozone, anti-aging, bears the ...