In addition to the general requirements for sealing material, the sealing ring should also pay attention to the following conditions:

(1) Elastic and resilient.

(2) Appropriate mechanical strength, including expansion strength, elongation, and tear strength.

(3) The performance is stable, it is not easy to swell in the medium, and the heat shrinkage effect (Joule effect) is small.

(4) Easy to machine and maintain precise dimensions.

(5) Does not corrode the contact surface, does not contaminate the medium, etc.

The most suitable and most commonly used material to meet the above requirements is rubber, so the seals are mostly made of rubber. There are many varieties of rubber, and there are new varieties of rubber. When designing and selecting, you should understand the characteristics of various rubbers and make reasonable choices.

Advantages

1. The sealing ring should have good sealing performance under working pressure and a certain temperature range, and can automatically improve the sealing performance with the increase of pressure.

2. The friction between the seal ring device and the moving part should be small, and the friction coefficient should be stable.

3. The sealing ring has strong anti-corrosion ability, is not easy to aging, has long working life and good wear resistance, and can be automatically compensated to a certain extent after wear.

4. The structure is simple, easy to use and maintain, and the seal ring has a longer life.

Notes

1. Clean the installation location.

2. Clear the burrs during the installation movement of the seal.

3. Apply lubricant to the seal.

4. Protect the sealing surface from damage.

5. Check that the size of the seal is correct.

6. For the seals that need to be deformed, install them with the appropriate tools.