The Development Trend Of Mechanical Seals

The current development trend of mechanical seals can be divided into the following points:

1. Narrow surface sealing improves sealing performance and reduces friction and heat generation;

2. To develop in the direction of high PV value to meet the requirements of high speed and high pressure;

3. Application of tandem double end face, multiple end face and compound seal (such as the combination of ordinary mechanical seal and bellows seal);

4. Low temperature and extremely low temperature sealing;

5. Sealing of high-viscosity and particle-containing media;

6. Seals with higher safety and reliability, such as mechanical seals for nuclear power plant pumps;

7. Research on special materials and the most suitable matching materials and easy-to-form materials (mainly interested in new ceramics);

8. Improvement of the shape of the sealing end face;

9. The application of easy to load and unload and split seal;

10. Application of welded bellows and multi-layer (two-layer, three-layer) bellows;

11. Application of leakage detection and alarm device on sealing surface;

12. Research on scientific and systematic management.