SiC have the property of excellent resistant-corrosion, high mechanical strength, high thermal conductivity, good self-lubrication, used as seal faces, bearings and tubes in spacecraft, machinery, metallurgy, printing and dyeing, foodstuff, pharmaceutical, auto industry and so on. When the sic faces are combined with graphite faces the friction is the smallest and they can be made into mechanical seals which are able to work in highest working requirements. High Wear Resistance, High Corrosion Resistance, High Heat Resistance, Produced in the common method of Powder metallurgy, Best performance as pure chemical compound, Most ideal for mass production on high volume.

AI2O3 Ceramic seal faces have the property of the resistant-high-temperature, resistant-corrosion, resistant-wearing and good sealing and are widely used in spacecraft, machinery, metallurgy, printing and dyeing, foodstuff, pharmaceutical, auto industry and so on.

Tungsten carbide is widely used as seal faces with resistant-wearing, high fractural strength, high thermalconductivity, small heat expansion co-efficient. It is the best material to resist heat and fracture in all hard face materials.