[Three rain valve to recommend the star product - Mechanical seal] Description: Mechanical seal is a rotary mechanical shaft seal device. Such as centrifugal pumps, centrifuges, reactors and compressors and other equipment. Due to the presence of the drive shaft through a gap between the inner and outer circumference of the device, so that the axis of the machine, the media leak out through the gap 103-105 mechanical seal, if the pressure is lower than atmospheric pressure inside the device 103-120 mechanical seal, then Air leakage into the device, so there must be a seal to prevent leakage devices. Many types of seal, due to the mechanical seal has less leakage and long life, etc., so the world of mechanical seals in these devices is the most important way of shaft seal. Mechanical seals, also known as seal mechanical seal, in the relevant national standards are defined as: "by at least a pair of vertical kept under fluid pressure and compensation mechanism stretch (or magnetic) role and secondary seal fitted to the end face of the axis of rotation prevent fluid leakage relative sliding device attached merger constituted "[three rain valve to recommend star products - mechanical seals] Description: Seal Failure Analysis: When checking the hard surface of the ring, there are four signs to note: a , ceramic ring broken; c, nicks;; d, coating off b, thermal cracking. Tight ceramic ring assembly is the main rupture, improper assembly who is also a relatively common cause. Because the coating material and the substrate material both linear expansion at different rates, so the temperature rises, the ring surface cracks will appear, especially Stellite alloy is particularly serious. In the more advanced coating materials, nickel-cobalt-based tungsten carbide based coating is better. The cooling of the sealing surface, can effectively prevent thermal cracking, remains in the solid particles often damage the surface of the sealing surface, such as sand grinding wheel will damage the hard surface of the grinding ring, resulting in the sealing surface or the sealing surface of the open Room generate crystals, and after re-grinding graphite ring, graphite ring embedded abrasive surface will. 103-105 mechanical seal | mechanical seals manufacturer selected three rain (certified) | Lianyungang 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.