Sealing ring, as an indispensable part of the automotive industry, its importance is self-evident. It mainly plays the role of sealing and preventing liquid or gas leakage, so as to ensure the normal operation of key parts of the automobile engine, fuel system, cooling system and so on. In the process of automotive design and manufacturing, the material, size and accuracy of the sealing ring have strict requirements to ensure that it can operate in a long-term stable environment such as high temperature, high pressure and high speed. With the continuous development of the automotive industry, the performance and life of the sealing ring are also put forward higher requirements, the future, the design and manufacturing technology of the sealing ring will continue to innovate and progress, providing a strong guarantee for the development of the automotive industry.