1) Classification: 95%AL203, 2) Colors: white, beige, red, black, 3) Porosity: <=0.5 4)free for sample Alumina ceramic mechanical seal Alumina ceramic seal faces have the property of the resistant-high-temperature,resistant-corrosion,resistant-wearing and good sealing. Application: It widely used in spacecraft,machinery,metallurgy,printing and dyeing, foodstuff, pharmaceutical, auto industry and ...