1. In the working pressure and a certain temperature range, the sealing ring should have good sealing performance, and can automatically improve the sealing performance as the pressure increases.
2. The friction between the sealing ring device and the moving part should be small, and the friction coefficient should be stable.
3. The seal ring has strong anti-corrosion ability, is not easy to age, has a long working life, is good in wear resistance, and can automatically compensate for a certain degree after wear.
4. Simple structure, convenient use and maintenance, so that the seal ring has a longer life.