Tungsten Carbide Mechanical Seal

Tungsten carbide mechanical seal, made of tungsten carbide material, is being used increasingly on fluid pump to replace packed gland and lip seal. Pump with mechanical seal perform more efficiently and generally perform more reliably for extended periods of time.

Tungsten carbide mechanical seal is provided to prevent pumped fluid from leaking out along the drive shaft. The controlled leakage path is between two flat surfaces associated with the rotating shaft and the housing respectively. The leakage path gap varies as the faces are subjected to varying external load which tend to move the faces relative to each other. Tungsten carbide mechanical seal requires a different shaft housing design arrangement compared to that for the other type of mechanical seal because the mechanial seal is a more complicated arrangement and mechanical seal does not provide any support to the shaft.