1.Raw material from Germany 2.good wear resistance 3.High precision, high concentricity 4.No bubbles 5.Smooth surface ... as weight reduction, noise abatement and wear improvements being realized.3. Advantages to PolyurethaneAbrasion resistant, Load bearing capacity, Tear resistant, Weather ... parts, Gaskets, Seals, Rollers, Roller covers, Sandblast curtains, diaphragms. PU coupler