... PU buffering, PU raised edge and flange conveyor spare part : 1. Main materialPU,also can use Natural rubber ... are widely used in automobiles, electric apparatus, machinery, chemical industry, building vibration isolation for seal, insulation, damping,etc. ... absorbing vibration function, sound insulativity, acid and alkali resistance, electric insulativity, resistance to oxidation and solvent, etc. 10. ...