[Three rain valve to recommend the star product - Mechanical seal] Introduction: Failure Analysis graphite seal ring (ring) crack is due to vibration transmission parts, rubber ring up big and graphite ring itself caused by internal stress while coking is caused due to high temperature, which is common in high-temperature hot oil refinery medium. Fuming sulfuric acid, nitric acid, hydrofluoric acid, sodium secondary green, aqua regia, over hydroxides erosion of graphite have several strong oxidant, corrosion effect exacerbated with increasing temperature. Usually hard ring (stationary ring) hot surface can cause severe wear of the seal ring, without the vertical pump cooling. At high temperature, high pressure, spring compression is too large, the shaft will move under the string is too large, will cause excessive wear of the sealing surface. [Three rain valve to recommend the star product - Mechanical seal] Introduction: Reason seal failure analysis: Failure mode and use the rubber ring is related to hypertension is usually so pressing the ○-ring failure reason 103-115 aircraft seal, when found ○ type ring hardens into a rectangle or when you need to adjust the amount of compression, otherwise it will heat up. It is necessary to understand the use of a synthetic rubber temperature. Synthetic rubber is mostly due to a large circle of swelling caused by chemical attack, they all have some own characteristics, such as fluorine rubber resistant to high temperatures and ethylene, propylene ○-ring used in the petroleum oil will swell 103-120 mechanical seal Ozone for NBR have erosion 103-90 mechanical seal, so nitrile rubber products do not install in the motor, so the high temperature and chemical corrosion is usually caused by hardening of rubber products, the main reason for the crack. When installing rubber parts are surface nicks and cuts, but also a common cause of seal failure. The signs of the old fixed screw shaft, keyway, spline shaft, sharp shoulder so will damage rubber parts. 103-85 mechanical seal, Wuxi mechanical seal, mechanical seal 103 is provided by the manufacturer selected three rain 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!