Mechanical seal is usually composed by a pair of ring and static ring,
seals, springs, thrust ring and other types of screw component, it
mainly for pumps, compressors, hydraulic transmission, and other
similar devices the rotation axis of the seal.

One commonly used engineering ceramics are alumina, silicon nitride
and silicon carbide, which is so-called
[url=http://www.seekpart.com/general-mechanical-
components/gaskets/Ceramic+Mechanical+seal.html]Ceramic Mechanical
Seal[/url]. Ceramics has high hardness, wearing resistance, good
corrosion resistance and good heat resistance characteristics, so it
is an ideal dynamic and static ring sealing surface material. In which
silicon carbide is a recent development of new material? In addition
to the general characteristics of ceramics, it also has good chemical
stability, heat resistance and thermal vibration resistance.