... .Smooth surface 1. What is polyurethane?Polyurethane (commonly abbreviated PU) is a unique material that offers the elasticity of rubber ... superior impact resistance, while offering excellent wear properties and elastic memory.Urethanes have replaced metals in sleeve bearings, wear plates, ... parts, Gaskets, Seals, Rollers, Roller covers, Sandblast curtains, diaphragms. PU gear, PU gasket, PU parts