... % -99.5% Main applications: It is effectively used in pressure washers and small pumps. Property: ItemsUnit95%Al2O399.5%Al2O3Densityg/cm33.73 ... animals equipment filter pump 2, Ceramic plunger for high pressure cleaner. 3,Wearlessness,resistant acid-base and high intensity ... Dimension, Tolerance, Surface Roughness, Concentricity, Perpendicularity and other. Alumina pressure washer ceramic plungers