... , disc, wafer, ring, seal, bearing, valves, pump plunger, beam, roller, shaft, screw, washer, sleeve, hunger, spacer, holder, carrier, insulator, scissors, knife ... , tools, fixture, clamp, chuck, nozzle, guide, frame, lining, and grinding media, milling ball or beads.These precision toleranced ceramic components or ... .01Planeness0.005Roughness 0.05Fit clearance0.005 alumina ceramic part& ceramic shaft