Causes of mechanical seal leakage

There are many reasons for mechanical seal leakage, including:

1. Excessive compression ratio between the moving ring and the static ring: This may cause excessive wear of the sealing end face, thereby causing leakage.

2. The sealing ring between the static ring and the gland fails: the quality of the sealing ring is reduced or damaged, which may cause leakage.

3. Corrosion of the sealing surface of the shaft sleeve: If exposed to a corrosive environment for a long time, the sealing surface of the shaft sleeve may be damaged, causing leakage.

4. Spring failure: Insufficient spring preload or breakage, corrosion, etc. may occur after long-term operation, resulting in the inability to effectively compensate for the floating of the sealing ring, resulting in leakage.

5. Improper installation of mechanical seal: Improper installation of moving and stationary rings, such as tilt or incorrect compression size, may also cause leakage.

6. Large axial movement of the shaft: Axial movement of the shaft may cause poor fit of related accessories, resulting in leakage.

7. Defects in the auxiliary sealing ring: Quality problems or improper assembly of the auxiliary sealing ring may cause leakage.

Thermal Damage: Heat generated by machinery can cause sealing components to deform or thermally crack, causing leaks.

8. Corrosion: Prolonged contact with corrosive media may cause the sealing material to age or be damaged, causing leakage.

9. Sealing material quality issues: Sealing materials may age after long-term use, reducing sealing performance and causing leakage.

10. Sealing methods and environmental issues: different