Mechanical sealant failure reasons: rubber parts aging, deformation, mainly in the hot water pump aging, deformation. Mechanical seal failure performance of the phenomenon for the water temperature is too high, the media dissolved rubber. Loss of flexibility rubber surface loose, rough, from the appearance, so that failure of rubber. Treatment: replace the rubber material.
The main reason is the static ring indoor static ring interior hole size error processing surface. The phenomenon of the performance of the axial water spray, there is a gap between the static ring and the inner hole, or the inner hole rough, static ring and turn, rubber wear. Treatment: replace the pump cover. Or raw materials with static ring around the outer ring, or add sealant for emergency treatment.
Mechanical seal leakage of the fourth possibility is that the motor shaft journal processing accuracy is poor, small size, rough and shaft neck corrosion. Main reason is motor shaft neck (ring) processing, small size, or due to the medium with corrosive corrosion pump, and due to the long discontinued, water as medium, steel shaft and impeller casting, pump cover of the electrode potential, forming the original battery reaction, causing the shaft neck corrosion. The performance is full of little surface corrosion.
Treatment methods: corrosion on the surface with sandpaper polish, with raw material for winding, into the ring for emergency treatment, the best way is changing axis or shaft bushing after processing to restore to the original axis dimensions.
