How are ceramic and metal sealed joint?
The sealing parts should be selected according to the different line speed, sealing medium, temperature, pressure and direction.
For rotational motion, the rotary shaft lip seal ring should be used.If the metal is in the outside, in the ceramic, then rotating sealing lip can be directly sealed ceramic surface, because ceramic material is hard enough, wear; if it is metal on the inside, outside is ceramic, then do some processing on the metal surface, such as hard chrome plating, plating ceramic. Or the sleeve, and the shaft interference fit, hot installation, the surface should also be hardening treatment
If it is static sealAxial, O ring or flat gasket can be used; radial O ring can be used.If it is dynamic seal, in addition to radial seal, but also consider whether the need for axial dust ring.The end face seal has a special sealing ring, and the lip is contacted with the ceramic surface.For reciprocating motion, a combination of O rings or other cross sections can be used.
