The performance and advantages of the sealing ring

In addition to the general requirements for the material of the sealing ring, the sealing ring should also pay attention to the following conditions:
(1) Elasticity and resilience;
(2) Appropriate mechanical strength, including expansion strength, elongation and tear strength, etc.
(3) The performance is stable, it is not easy to swell in the medium, and the thermal shrinkage effect (Joule effect) is small.
(4) It is easy to process and form, and can maintain precise dimensions.
(5) Does not corrode the contact surface, does not pollute the medium, etc.
The most suitable and most commonly used material to meet the above requirements is rubber, so most of the sealing rings are made of rubber materials. There are many varieties of rubber, and new varieties of rubber appear constantly. When designing and selecting, you should understand the characteristics of various rubbers and choose them reasonably.
1. The sealing ring should have good sealing performance within the working pressure and a certain temperature range, and can automatically improve the sealing performance with the increase of pressure.
2. The friction between the sealing ring device and the moving parts should be small, and the friction coefficient should be stable.
3. The sealing ring has strong corrosion resistance, not easy to age, long working life, good wear resistance, and can automatically compensate to a certain extent after wear.
4. The structure is simple, the use and maintenance are convenient, and the sealing ring has a longer life.