[Three rain valve to recommend the star product - Mechanical seal] Introduction: 1. Size - used by the majority of users will buy the old sample, but the seal in use for some time, will be the temperature, pressure and wear and other factors greatly influence its original size, press select sample only as a reference, a better approach is to measure the location of the seal of the metal tank size H75N-80 mechanical seal, the accuracy will be higher. 2. Pressure Level - Check out the data from the original description of the use of machinery, or by observing the softness of the original seal and structural inference working pressure rating, the relevant pressure levels refer to the following description of the production of user attention. [Three rain valve to recommend the star product - Mechanical seal] Description: Asbestos rubber gasket: cut by asbestos rubber sheet. Its components are 60 to 80% asbestos and 10 to 20% of rubber, and filler, curing agents and the like. It has good heat resistance, cold resistance, chemical stability, and abundant supply, the price is cheap. When in use, do not have a great pressing force. Because it can adhere to the metal, so it is best coated with a layer of graphite, in order to avoid the demolition strenuous. Asbestos rubber sheet in four colors: gray H75N-63 mechanical seal for low pressure (grades XB-200, pressure ≤16 kg / cm, temperature 200 ℃); red H75N-85 mechanical seal for medium pressure (grades XB-350, pressure up to 40 kg / cm mechanical seal, temperature 350 ℃); purple, for high pressure (grades XB-450, pressure 100 kg / cm temperature 450 ℃); green for oil, pressure resistance is also very good. H75N-70 mechanical seal | mechanical seals manufacturer selected three rain (certified) | Fushun mechanical seal is provided by three rain Valve Co., Ltd. of Tianjin. Valve Co., Ltd. Tianjin three rain (www.tjsymf.com) is a leader in Tianjin, seals, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In three rain valve leadership with the staff warmly welcome all inquiries negotiations to create three rain valve a better future.