Ceramic Seal
Alumina
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 thermal conductivity, small heat expansion
co-efficient. It is the best material to resist heat and fracture in all
hard face materials
Silicon
Carbide have the property of excellent resistant-corrosion, high
mechanical strength, high thermal conductivity, good self-lubrication,
used as seal faces, bearings and tubes. 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
Graphite
has the good property of good resistant-corrosion, high thermal
conductivity and lower friction, good self-lubrication, the smaller
expansion. They can be made into the seal faces, bearings and so on. It
is ideal to choose it as the frictional mating rings