Asbestos textile gasket. Asbestos textile rope into a flat shape, and then the both ends and made ​​of asbestos rope gasket seam. Depending on the temperature level, asbestos materials are different. At present, the domestic use of 60% a 70% blue chrysotile asbestos mixed with a graphite textile gasket, temperature up to 800 ℃.

Graphite resin gasket. Using blue asbestos and polyvinyl chloride resins and other raw materials made of a soft sheet material made ​​of acid-cut gaskets, high strength, good pressure resistance, the price is cheaper. 65% of the sample in boiling nitric acid about lh, mass loss of 7.28%.