Performance and structure of mechanical seal gasket-

Performance and structure of mechanical seal gasket

　2017-06-16　　

Performance and structure of mechanical seal gasket:

The performance and structure of various gaskets of 560 mechanical seal are introduced as follows:

1) Non-metallic gasket

(1) There are many types of rubber used in rubber sheets for sealing, generally natural rubber, rubber, styrene butadiene rubber, ethylene propylene rubber, silicone rubber, fluorine rubber, etc., because the rubber material is soft, it is often in the rubber sheet Various fabrics are added for reinforcement, such as nylon cloth, polyester cloth, glass fiber cloth, and metal wire mesh.

(2) Asbestos rubber sheet Asbestos rubber sheet is made by pressing asbestos, rubber and filler. According to its different formulas, properties and uses, there are mainly high pressure asbestos rubber sheets, medium and low pressure asbestos rubber sheets and oil-resistant asbestos rubber sheets. The asbestos materials used to make asbestos rubber sheets are wet asbestos and blue asbestos (asbestos). Wet asbestos belongs to the serpentine type of asbestos. Its main component is magnesium silicate containing about 13% of crystal water. It has good heat and alkali resistance, high tensile temperature, and poor acid resistance. Most asbestos rubber sheets are Made by it. Blue asbestos is a hornblende asbestos, the main component is silicate containing about 2.5%-3.5% crystal water, magnesium oxide composition is very small, iron oxide accounts for about 18%-24%, blue asbestos not only has good heat resistance, And the acid resistance is also good, so it is mostly used to make acid-resistant asbestos rubber sheets.

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The type of mechanical seal gasket 　　 the influence of asbestos fiber quality in mechanical seal