Mechanical seal gasket material and gasket production-

Mechanical seal gasket material and gasket production

　2017-01-05　　

Mechanical seal gasket material and gasket production

(1) Asbestos-based mechanical seal materials are still used in large quantities, but the properties of their finished products vary greatly depending on the manufacturer.

(2) Expanded graphite for mechanical seal This is a new generation of mechanical seal material developed in recent years, and a series of products based on it have been developed in China.

(3) The performance of metal-coated gaskets for mechanical seals has been greatly improved with the improvement of manufacturing methods. Roll forming method and argon arc welding at the splicing point of the packing material are used to make the surface of the gasket of the mechanical seal product smooth, and the transition at the corners is smooth. For gaskets with complex shapes or extra-large straight specifications, it can also be produced by rolling. However, due to the high hardness of the sealing surface of the metal implanted gasket, compared with other soft gaskets, its sealing performance is worse. However, it does not require high leakage rate for the sealing of low or medium pressure liquid media, such as the sealing of general medium and high temperature oil products. . Has been able to meet the requirements.

(4) Expanded graphite braided gasket is a gasket that came into being with the development of expanded graphite sheet. Its quality was once good and it was welcomed by users. The quality of its production has a great influence on the sealing performance.

(5) Expanded graphite reinforced gasket with skeleton. This is a gasket with simple structure and good sealing performance. Its leakage rate is approximately applicable to the sealing of medium and low pressure liquid or gaseous media, and can be stamped as required In a complex shape, its application range is comparable to that of asbestos rubber sheet gaskets. From the perspective of domestic gasket production, the biggest problem is that the product quality is the least guaranteed, which seriously affects the sealing performance.　　227.html,

Formulation of New Standards for Mechanical Seal Gaskets 　　 Classification of Fluid Dynamic Seals and Technical Progress of Mechanical Seal