Failure mode and use the rubber ring, but is usually a reason for making the high-pressure compression molding of ○-ring failure, when found ○ type into a rectangle or ring hardens, it needs to adjust the amount of compression, otherwise it will generate heat. It is necessary to understand the use of a synthetic rubber temperature. Large swelling synthetic rubber ring mostly 200ZJ-I-A58 mechanical seal caused by chemical attack, they all have their own characteristics of some 150ZJ-I-A70 mechanical seal, resistant to high temperatures, such as fluorine rubber, and ethylene, propylene ○-ring used in petroleum oil will swell, ozone NBR aggressive action, so do not install nitrile rubber 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 were cut and surface nicks, but also the common cause seal failure. The signs of the old fixed screw shaft, keyway, spline shaft, sharp shoulder so will damage rubber parts. Note a mechanical seal work should pay attention to the problem 1. installation. Installation to be very careful to avoid bias arising from the installation the gland should the coupling alignment after 200ZJ-I-A60 mechanical seals (1), the bolt should be uniform on the branch, to prevent the end face deflection mechanical seal gland with feeler points, its error is less than 0.05 mm. (2) Check the gland and the shaft or sleeve diameter with the gap (ie, concentricity), surrounded uniformly, with the feeler points tolerance is not greater than 0.01 mm. b. spring compression according to the provisions, does not allow too large or too small phenomenon, requiring error 2.00 mm. Excessive face pressure to increase and accelerate the wear face. Too small will cause less than the pressure seal and can not play a role. c. ring installed, the ring is pressed against the rear springs should automatically play back the mechanical seal, 200ZJ-I-A58 mechanical seal, slurry (certified merchants) are provided by Anguo City-yuan Pump Company. Anguo Shi Yuan Pump Co., Ltd. (www.shiyuanbeng.com) is specialized in "IS centrifugal pumps, XA centrifugal pump, BA centrifugal, B-type centrifugal pump, double suction centrifugal pump" of the enterprise, the company adhering to the "honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Geng wheat.