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Spiral Wound Gaskets For High Temperature And High Pressure Sealing
Basic type spiral wound gasket consists of a thin metallic strip and soft non-metallic filler that are simultaneously wound on a rotating mandrel. The metal hoop is pre-formed with a V or W shaped profile which allows the gasket to act as a spring between the flanges. Further, the hoop provides the basic structural element for the gasket while the non-metal filler material seals small imperfections on the flange surfaces. Due to its excellent compression resilience, it Is suitable for sealing spots where the alteration of temperature and pressure are frequent, such as pipes, valve, pumps etc.
Solid outer ring spiral wound gasket consist of a metal guide ring and sealing element. The external ring accurately centers gasket on flange face: provides additional radial strength to prevent gasket blowout and acts as a compression stop. This profile is normally used in raised and flat faced flanges. The outer ring is often made of carbon steel
Solid inner ring spiral wound gasket has an inner ring. Solid inner metal ring acts as a compression stopper and fills the annular space between flange bore and the inside diameter. Designed to prevent accumulation of solids, reduce turbulent flow of process fluids and minimize erosion of flange faces. It is suitable for male and female pipe flanges.
Style CG spiral wound gaskets utilizes an external ring which accurately centers the gasket on flange faces provides additional radial strength to prevent gasket blowout and acts as a compression stop. The CG spiral wound is a good general purpose gasket, is suitable for use with flat face and raised face flanges.
Style CGI spiral wound gaskets are suitable for use on flat face and raised face flanges, and can be specified for high pressure/temperature service or where corrosive or toxic media are present. The Inner rings on a style CGI spiral wound gasket adds additional strength against blowout, and acts as a compression stop.
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