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Six kinds of flange gasket performance introduction

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Release Time：2020-03-28

Flange gaskets are used in pipeline flange connections. They are seals between two flanges. The medium, pressure and temperature directly affect the selection of flange gaskets. Six kinds of flange gasket performance introduction Graphite gasket: flat gasket made of soft graphite, suitable for high temperature, strong corrosive medium. Metal gaskets: Metal gaskets are made of pure iron, extremely soft steel, stainless steel, aluminum and other materials. The machining accuracy and surface roughness of the sealing surface of metal gaskets are very high, and the bolt pressing force is very large. They are used in high temperature and high pressure valves. Metal coated graphite gasket: made of thin metal coated annular asbestos gasket. Soft seal butterfly valve is generally used in concave

Flange gaskets are used in pipeline flange connections. They are seals between two flanges. The medium, pressure and temperature directly affect the selection of flange gaskets.

Six kinds of flange gasket performance introduction

Graphite gasket: flat gasket made of soft graphite, suitable for high temperature and strong corrosive medium.

Metal gaskets: Metal gaskets are made of pure iron, extremely soft steel, stainless steel, aluminum and other materials. The machining accuracy and surface roughness of the sealing surface of metal gaskets are very high, and the bolt pressing force is very large. They are used in high temperature and high pressure valves.

Metal coated graphite gasket: made of thin metal coated annular asbestos gasket. Soft seal butterfly valve is generally used in concave and convex flange sealing surface. Valves for higher temperatures and pressures.

Winding gasket: It is made of mixed winding of corrugated metal tape and sealing material tape. There are many kinds of steel belt-asbestos, steel belt-PTFE, steel belt-flexible graphite, etc. Generally used for concave and convex flange sealing surface. Suitable for high temperature medium pressure valves.

PTFE gasket: generally used for tongue and groove sealing surface, mainly PTFE and glass fiber PTFE two kinds of materials. Used in low temperature and various pressures of strong corrosive media.

Asbestos rubber gasket: suitable for smooth flange sealing surface, concave and convex flange sealing surface and tongue and groove flange sealing surface. The advantages are corrosion resistance and good thermal stability, good plasticity, with a smaller compression force to ensure sealing. The disadvantage is that the strength is low, easy to stick on the flange sealing surface. Asbestos rubber gasket has universal asbestos board, anti-erosion asbestos board, signal butterfly valve like asbestos board, acid resistant asbestos board, oil resistant asbestos board, metal wire clip asbestos board and other materials. Used in high temperature medium pressure valve.

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Six kinds of flange gasket performance introduction

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