... O rings, buffers, caps,etc. anti vibration mount, rubber metal, silent block, bushing, mount,gasket,machine feet,bell mounting,torque ... bush, materials are: Silicone, polyurethane PU, EPDM, chloroprene rubber(CR), Viton, Nitrile-Butadiene rubber ( NBR), natural rubber (NA) ... and other rubber materails. anti vibration mount, rubber metal block, silent block, bushing, mount,gasket,machine feet,bell ...