99.5% alumina ceramic piston pump Fine ceramic piston Alumina ceramic shaft pump High purity alumina 99.5% al203 Features:1) ... A variety of specifications available. 2) Satisfy various technical request3) Lower ... tube, rod, plate, disc, wafer, ring, seal, bearing, valves, pump plunger, beam, roller, shaft, screw, washer, sleeve, hunger, spacer, holder ...