The sealing ring is a kind of seal, and the choice of sealing ring material is of great significance to its sealing performance and service life.The general sealing ring can achieve good sealing effect under a certain high temperature and high pressure.Moreover, the sealing ring has the advantages of simple structure, easy to use and maintain, strong corrosion resistance, not easy to age, long working life, and wear resistance.

Analysis of material selection and performance of sealing ring：

1. Compatibility of media：

It is a very important basis to choose the sealing material according to the sealing medium, because the sealing ring will have direct contact with the sealing medium. If there is no good compatibility between them, it will not only damage the sealing ring, but also contaminate the sealing medium.The material of the sealing ring is not subject to a series of circumstances such as corrosion and wear of the sealing medium, chemical reactions, etc., and special circumstances require special considerations.

2. Mechanical movement speed：

The adaptability of seal materials to the speed of mechanical movement is also different. When the speed of mechanical rotation is high, seals of ordinary materials may fail and cause leakage.

3. Working temperature：

The temperature has a great impact on the performance of the sealing material, whether it is too high or too low.Too high temperature will reduce the hardness and stretchability of the sealing ring, and too low temperature will make the seal brittle.Therefore, each sealing material has its own minimum and maximum temperature to adapt to. Now most sealing ring materials are mostly mixed materials, so the temperature should be more accurately controlled.

4. Work pressure：

The material of the sealing ring is also very sensitive to working pressure. There is a big difference between the pressure that the sealing ring made of different materials can withstand and the pressure that different types of sealing ring can withstand. Therefore, there are pressure resistance, oil resistance and temperature resistance in the sealing ring products.In terms of oil seals, the working pressure is relatively small. If it exceeds its tolerance range, it will not only cause leakage, but also reduce the service life of the sealing ring.