One: Excessive leakage. Reasons and measures:1. Poor assembly: Install the sealing ring correctly, do not install it backwards or misplace it 2. Insufficient lip pressure (oil seal): Check whether the seal size is correct and whether the spring is working properly 3. The shaft is rough or scarred: Reduce the roughness of the shaft, or use softer seals or other sealing materials 4. Seal lip cracking: It may be caused by rough shaft surface, incorrect sealing material used, speed, high temperature, etc. 5. The sealing ring is damaged or worn: replace the sealing ring and improve the wear resistance of the sealing ring. Two: high friction. Reasons and measures:1. Poor lubrication: It may be possible to replace it with a polytetrafluoroethylene friction surface 2. The preload is too large: the sealing type may be changed 3. The pressure is too high: the sealing type may be changed Three: The seal is damaged. Reasons and measures:1. Improper or careless installation: Utilize proper techniques and tools 2. Shaft roughness: Check surface roughness and chamfering technical requirements 3. If there are abrasive particles (also manifested as shaft wear), a dust-proof seal should be used in dusty environments. Four: Excessive seal wear. Reasons and measures: 1. Wrong sealing type or material selection: Use a more suitable sealing type according to the working conditions. 2. The pressure is too high: Use a more suitable seal according to the working conditions. 3. The temperature is too high: Use a more suitable seal according to the working conditions.
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