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Serrated Metal Gasket is normally called Kammprofile Gasket and
widely used on High pressure & high temperature plumbing flanges
and is ideal for the pressure vessels, heat exchangers and Valve
bonnet. Serrated Metal Gasket has smaller contact area and has
excellent sealing effect with lower torque than Flat Metal gasket,
however, it may occur flange damages it the hardness of Flange &
Gasket is same or the difference of the hardness between Flange
& Gasket is very little. In this reason, Soft Graphite, PTFE, or Nonasbestos
layer can be attached on the surface of serrated matal gasket
and it prevent Flange damages & enlarges sealing efficiency.
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