(Zirconia) Alumina ceramic insulator (Shaft and Sleeve) 95%--99.5% AL2O3 ceramic bushing, ceramic plunger We specialize in manufacturering of high alumina ceramic product 95%--99.5% AL2O3 ceramic bushing, ceramic plunger We specialize in manufacturering of high alumina ceramic product, with competitive terms. Material: Alumina 95% -99.5% Customized production is aviable, for more information, please do not hesitate to tell me. Dimension, Tolerance, Surface Roughness, Concentricity, Perpendicularity and other Specification are upon your requirements. Add to Basket