O-shaped rubber sealing ring has the advantages of simple structure, good sealing performance, small friction, small groove size and easy manufacturing, and is currently widely used in hydraulic systems and pneumatic components.

1. The use of O-shaped rubber seal

0-shaped rubber seal (O-ring) is used for reciprocating motion, rotary motion and spiral movement sealing, fixed sealing and flange sealing in hydraulic and pneumatic components, etc., and can be used for inner diameter sealing and outer diameter sealing.
Working pressure: 0~32MPa, temperature: -35~+200°C, working medium: general mineral hydraulic oil, lubricating oil, water and compressed air.

2. Compared with the lip sealing ring, the O-shaped sealing ring of the hydraulic system has a poor life

The accuracy of the mechanical part of the sealing device needs to be very good; When used, if the standing time is too long, the starting resistance increases; In addition, when the speed is very slow, it will cause the phenomenon of “crawling”, and its use speed range is 0. 005～0. 3m/s.

3.Rubber seals in hydraulic systems

The O-ring of the hydraulic system can be used for dynamic sealing and static sealing, but the O-ring has a large starting friction resistance and a short life when the O-ring is used as a dynamic seal.

4.Slip ring combination O-type rubber seal
The slip ring combination O-shaped (or rectangular) sealing ring (“omega” shape) can improve the shortcomings of the above O-ring seal, but the installation is more inconvenient. This sealing device can be used at speeds up to Im/s and has a longer life than O-rings. In this combination ring, the use of rectangular ring has a longer life than the use of O-ring, and the sealing performance is better.
5. Compared with other hydraulic sealing rings, it has the following main advantages.

a. Good sealing and long life.

b. The dosage is small, and a single turn can seal in both directions.

c. The dynamic friction resistance is small.

d. Good adaptability to oil, temperature and pressure.

e. Small size, light weight and low cost.

f. The sealing part has simple structure, small space occupation, and convenient assembly and disassembly.