Mechanical seals and other equipment due to prolonged high-torque mechanical movement of mechanical seals, gearbox backlash larger, resulting in greater noise and vibration equipment. Coupled with the long-term sealing parts in high-speed, high temperature operation, the oil leak occurred when the sealing area. Causing leakage sealing parts for the following reasons: 1, seal leakage quality problems; 2, lubricating mismanagement 25FSB-25 mechanical seal, causing oil starvation to add ultra-bit or dry grinding; 3, seal damage repair process pieces cause seal failure; 4, oil level vent blockage leads to excessive pressure, etc; more problems not only affect the safety of production equipment for continuous operation 40FSB-20 mechanical seal, while resulting in a significant cost of doing business consumption. [1] How to choose the key components on the pump mechanical seal is a precision mechanical seals, one of the basic elements of mechanical structure is more complex, a variety of pumps, reaction synthesis reactor, turbine compressors, submersible motors and other equipment. Sealing performance and service life depends on many factors, such as the accuracy of selection, the machine, the correct installation and so on. First, the selection of the method according to the working condition of the mechanical seal and the different nature of the medium, there is high temperature, low temperature mechanical seal 25FSB-20 mechanical seals, high pressure, corrosion-resistant mechanical seals, mechanical seals and resistant granular media adapt easily vaporized light hydrocarbon medium such as mechanical seals, mechanical seals should be selected and a different type of construction material according to different uses. Selection of the main parameters are: the seal chamber pressure (mpa), fluid temperature (℃), working speed (m / s), the characteristics of the fluid and the installation space effectively sealed. The basic principles for selection: 25FSB-25 mechanical seals, mechanical seals Dunhua, fluorine plastic centrifugal pump provided by Anguo Stone yuan Pump Company. Anguo Shi Yuan Pump Co., Ltd. (www.shiyuanbeng.com) strong, credible, in Baoding centrifugal pumps and other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead you hand pumps and stone yuan into the brilliant, for a better future!