Graphite Gasket
By the soft, flat gasket made of graphite for high temperature, strong corrosive medium.
Metal gasket
There are three main types:
1, octagonal and oval-shaped pad - For flange sealing surface trapezoidal trough
2, tooth form in the flat gasket sealing surface of the metal processing corrugated profile of cone - applicable to bump-type flange sealing surface
3, lens pad - For flange sealing surface lens type
Pure iron metal pads have a very mild steel, stainless steel, aluminum and other materials
Metal gasket sealing surface of the machining accuracy and surface roughness requirements of high strength bolts pressed a lot, for use in high temperature and high pressure valves
Metal coated graphite gasket
Coated by a thin metal ring gasket made of asbestos. The general type used in flange sealing surface embossing. Applicable to high temperature and pressure valves
Spiral wound gasket
Metal band from the waveform and the sealing material formed with a mixed entangled. There are strip - asbestos, steel - PTFE, steel - such as flexible graphite. Bump type generally used for flange sealing surface. Apply to a higher temperature medium-pressure valve.
PTFE gasket
Trough joints are generally used for sealing surface, the main folder PTFE and PTFE fiberglass two materials. Lower temperature used in a variety of strong corrosive medium pressure.
Asbestos rubber gasket
Applicable to smooth-type flange sealing surface, convex-type flange sealing surface and sealing surface flange trough tenon. The advantages of corrosion resistance and good thermal stability, good plastic face, with a smaller force subjects to ensure that sealed pressed. The disadvantage is that low intensity, easy to stick in the flange sealing surface. Asbestos rubber pads are universal石棉板,石棉板corrosion, which tends to be used石棉板,石棉板acid, oil石棉板, folders and other wire materials石棉板. Use at a high temperature of the medium pressurevalve
