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A washer is an elastomeric component that covers the in […]
A washer is an elastomeric component that covers the intersection between two surfaces. They are usually made from a variety of materials, including rubber, cork or paper, metal, copper and foam. Due to its functionality, this flexible element can be used for a wide range of applications. These measures include shockproofing, packaging, hygiene, noise and sound reduction, and most importantly, its most common use is sealing.
Gaskets are used in almost all industries including food processing petrochemicals, pharmaceuticals, water and gas. Gasket materials were selected for their characteristics and ability to withstand a variety of environments, such as mining and deep sea, chemical resistance, alkali resistance, extreme temperature and pressure.
Gasket type
Metal washers are made of one or more metals and have the required shape and size. A commonly used metal gasket is a ring joint gasket (RTJ). They are always applied to special supplied flanges and ensure a good, reliable seal by the correct selection of profiles and materials.
Ring joint gaskets are designed to seal by "initial line contact" or wedging between the mating flange and the gasket. By applying pressure on the sealing interface by bolt force, the "softer" metal of the gasket flows into the fine structure of the harder flange material, resulting in a very tight and effective seal.
Non-metal GASKETS is usually used for flanges with flat and raised-faces of composite sheet in low pressure levels. Non-metal gaskets are manufactured from aramid fiber, glass fiber, elastomer, polytetrafluoroethylene (PTFE), graphite, etc. Full duplex face washer types are suitable for use with flat face flanges. Flat ring seal types are suitable for standing use face flanges.
Semi-metal gaskets are a composite of metallic and non-metallic materials. The metal is designed to provide strength and elasticity, while the non-metallic part provides compliance and tightness. Often used semi-metallic gaskets are spiral wound and cam profiles, as well as various metal-reinforced graphite gaskets.
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