The research and development of mechanical seals have now shown two main directions (1)-

The research and development of mechanical seals have now shown two main directions (1)
　2016-12-14　　
One is the emergence of various substitutes similar to asbestos. Only in the case of flat sheets made of various inorganic or organic synthetic fibers as reinforcing materials and different elastomers bonded and calendered, the ones that have been developed include inorganic fibers. , Organic fiber, carbon/graphite fiber and other reinforced rubber-based composite materials, replacing asbestos rubber sheet in a wide range c because asbestos has good chemical resistance, heat resistance, flame retardant, easy processing, low cost, etc. It can, at present there is no substitute that can completely reject asbestos. Moreover, the new W material cannot be asserted as being non-hazardous, so many non-asbestos materials are restricted to be used in a specific range. In the future, the development of non-asbestos sealing materials with better performance from the process and preparation methods will still be the main direction of attack.　　199.html,

The new rise of mechanical seals in non-asbestos materials 　　 The research and development of mechanical seals has shown two main directions (2)