... 1.good wear resistance 2.Good elasticity 3.High precision, high concentricity 4.No bubbles 5.Smooth surface ... requestColormore than 30 colors or per requestHardnessShore 5A~ 95ATemperatureup to 300°CHub MaterialAluminum, Steel, Sintered Bronze, Brass, Bearing, ... our own lather & grinding machine to make sure the precision can match our customers' needs high precision PU roller shore 75A (red ...