1, poor assembly. Properly install the sealing ring, do not reverse loading or dislocation.
2, lip pressure is not enough. Check the seal size is correct or not; shaft rough or spot scars; reduce the shafts of the shaft, or choose a soft seal or other sealing material.
3, the sealing lip cracking may be caused by the rough surface of the shaft, incorrect use of sealing material or high temperature.
4, the seal ring is damaged or worn, replace the sealing ring.
5, the shaft is rough. Check the surface roughness and chamfer technology requirements.
6, wrong choice of seal type or material. According to the working conditions, the matching type is more suitable for sealing.
7, pressure is too high, screw air compressor after shutdown system has been pressure, resulting in leakage of shaft seal, at this time should check the relief valve, export check valve. screw compressor If the shutoff valve works properly to eliminate system pressure after shutdown, the valve can be installed in the system pipeline to ensure that the system is free from pressure after the unit is shut down.