[Three rain valve to recommend the star product - Mechanical seal] Introduction: Due to the sealing surface will produce heat, so the rubber ring temperature should be below the design specifications. Viton and PTFE use temperature of 216 ℃, NBR's temperature is 162 ℃, although they can withstand high temperatures, but the sealing surface of the heat generated by high M74-170 mechanical seal, so vulcanized rubber ring is dangerous to continue, and eventually loses its elasticity and leak. When the medium high viscosity, lubricity performance, pressure ≤0.8MPa; or low viscosity, poor lubrication, pressure ≤0.5MPa, generally used in the unbalanced structure; M74-110 mechanical seal pressure exceeds the above values, the choice of balanced structure; pressure > When 15MPa, more optional tandem seal. [Three rain valve to recommend the star product - Mechanical seal] Description: Seal Failure Analysis sealing surface itself would provide evidence of seal failure, such as vibration, there will be signs of wear on the drive mechanical seal parts, such as traces of obvious, it is generally caused by improper assembly. For poor quality graphite ring (ring) is concerned M74-140 mechanical seals, which are more internal porosity, this is because in the manufacturing process, the aggregation caused by the expansion of gases inside the graphite carbon particles blown out, so that kinds of low-quality graphite seal ring is enabled, the carbon particles can easily fall off, leaving the sealing surface of the stick when the seal is disabled. Friction: At the top of the compensation and non-compensation ring ring inlaid with a pair of seal faces, play a major role in sealing machine seal. Under normal circumstances compensate narrow ring of soft material, end; uncompensated manufacturing ring with a hard material, end wider. Elastic element and locking ring: they constitute the load, compensation and buffering mechanism to ensure that the mechanical seal fitting end face after installation; timely compensation when worn; in by vibration, ran a dampening effect. The elastic member may be a spring, bellows, wave springs and the like. Locking ring for axial and radial positioning of an elastic element, usually both transmission torque or torque to overcome the function. M74-110 mechanical seal | Huizhou mechanical seal | M74 machine manufacturers to choose three rain seal provided by Valve Co., Ltd. Tianjin three rain. Valve Co., Ltd. Tianjin three rain (www.tjsymf.com) strong, credible, in Tianjin seal industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the three rain valve into the brilliant and you work for a better future!