[Three rain valve to recommend the star product - Mechanical seal] Introduction: mechanical seal selection: one, based on the size of the pressure may be initially determine whether to select a balanced structure and degree of balance. When the medium viscosity, high M37G-68 mechanical seal, good lubricating properties, pressure ≤0.8MPa; or low viscosity, poor lubrication, pressure ≤0.5MPa, generally used in non-equilibrium structure; pressure exceeds M37G-58 mechanical seal above values, the choice balanced structure; pressure> is 15MPa, can be used in series multi-seal. Second, according to the size of the velocity values ??to determine whether elastic element rotates with the shaft, which uses a rotary spring or spring stationary structure. When the speed <20-30m / s, the choice of spring rotary structure; unbalanced mass higher speed M37G-70 mechanical seal, rotating parts can lead to strong vibration, the choice of spring static structure. [Three rain valve to recommend the star product - Mechanical seal] Description: Metal foreskin washers: metal both good pressure and temperature performance, and good flexibility. Wrapping materials are aluminum, copper, mild steel, stainless steel, Monel alloy. Inside filler asbestos, PTFE, glass fibers and the like. Wave washer: a clamping force is small, and good sealing effect. Often used in the form of a combination of metal and nonmetal. Wound gaskets: is the thin strip of metal and non-metal band close together, wrapped in layers of circular cross-section wavy, good elasticity and tightness. Available 08 steel metal band, 0Cr13,1Cr13,2Cr13,1Cr18Ni9Ti, copper, aluminum, titanium, Monel and other production. Non-metallic materials with asbestos, PTFE and so on. Above, when told gasket performance, cited some numbers. Must state that these figures with flange form, media, technology, installation and repair of the situation and are closely related, and sometimes more than, and sometimes can not reach, but the pressure and temperature resistance, also interchangeable, such as high temperature resistance Pressure capacity is often reduced, these subtle problems can only appreciate M37G-58 mechanical seal in practice, mechanical seals selected three rain (certified), Chizhou 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.