... :99% Alumina 2.Wear resistance, 3.High mechanical strenght 4,Custom design 5,Eco-friendly ... ,high wear-resisting,good corrosion resistance ,high temperature tolerance,precision process, high mechanical strength, good chemical stability,good smoothness, mechanical seal good ... , Ceramic plunger for high pressure cleaner. 3,Wearlessness,resistant acid-base and high intensity ceramic assembly apply ...