Balancing the mechanical seal can reduce the sealing pressure Mechanical seal

Mechanical seals are balanced to reduce seal pressure

2021-08-02 10:52

Balancing the mechanical seal can reduce the sealing pressure and prolong the service life of the seal. Generally, the main shaft and bushing with steps are used to reduce the effective section of the torsion surface to achieve the above purpose. However, never adjust the net seal pressure to a level close to zero, because the result of doing so may cause unstable working conditions between the sealing faces, and the seal may be blown open due to sudden changes.

The answer to these mechanical seal problems may be to use an unbalanced seal

For some services, it may be better to use an unbalanced seal. For example, on some platforms, the safety concerns from fluid leakage may be more exaggerated than the life of the seal. In this case, the choice of seal may be understood as more likely to be selected with a higher sealing pressure. Likewise, when using seals for cooler liquids, the increase in operating temperature may be insignificant.