Principle and function of mechanical seal-Mechanical seal-

Mechanical seals are divided into two types: external and internal:

The main difference between them is that the location of the sealing surface medium and the direction of leakage are different. The built-in type has better force. Since its leakage direction is opposite to the direction of the centrifugal force of the rotating shaft, the leakage is smaller.

The leakage direction of the externally mounted type is consistent with the centrifugal force of the rotating shaft, and it is more prone to leakage. However, the externally mounted spring generally does not contact the medium, which can effectively prevent the corrosion of the medium, and is often used for the sealing of corrosive low-pressure media.