Questions about gaskets

The sealing performance is particularly good and is generally used in places where toxic materials are transported and leakage is particularly feared.

Form Type Material Applicable range Pressure/MPa Temperature/℃ Medium Non-metal sealing paper gasket Mild steel cardboard

This post was last edited by hxjjx on 2009-9-24 22:47 There are many types of gaskets, and they are divided into three categories: non-metallic, semi-metallic and metallic gaskets according to the subject materials of their construction. one: Non-metallic gaskets include rubber gaskets, asbestos gaskets, asbestos rubber gaskets, flexible graphite gaskets and polytetrafluoroethylene gaskets, etc. Among them, the main materials of rubber gaskets are natural rubber, and asbestos gaskets such as nitrile rubber and neoprene include wet asbestos and blue asbestos. Asbestos rubber gaskets are made of asbestos, rubber and fillers. Generally, asbestos fibers account for 60%-85%. Flexible graphite is a novel sealing material with good resilience, softness, and temperature resistance. It is made of graphite. Polytetrafluoroethylene (PTFE for short), as the name suggests, is made of polytetrafluoroethylene. two: Semi-metallic gaskets mainly include metal-coated gaskets, metal spiral wound gaskets, metal corrugated gaskets, metal toothed gaskets, etc. Among them, metal-clad gaskets (metal composite gaskets). The gasket has a non-metal core and an outer thickness of 0. 25-0. 5mm metal sheet. Metal spiral wound gaskets are made by alternately winding thin metal corrugated strips and non-metallic materials such as asbestos or flexible graphite into a spiral shape, and spot welding the beginning and end of the metal strips. three: Metal gasket. Under harsh operating conditions such as high temperature, high pressure and frequent load cycles, various metal materials are still the preferred materials for sealing gaskets. Commonly used materials include copper, aluminum, low carbon steel, stainless steel, chromium-nickel alloy steel, titanium-monel alloy, etc. Flat metal gasket. There are two types of flat gaskets: wide gaskets and narrow gaskets. The metal plate thickness of corrugated metal gaskets is generally 0. 25-0. 8mm。 The thickness of the gasket is generally 40%-50% of the wavelength. Toothed metal gaskets are mostly used for 6. 77-9. 8MPa pipe. The tooth tip distance is about 1. 5mm, the tooth top and tooth root angles are both 90 degrees. Its sealing performance is better than that of a flat gasket, and its pressing force is also smaller than that of a flat gasket. That’s all I know, I wonder if LZ is satisfied, haha