First, what is the sealing ring The sealing ring, also known as the oil seal, is a ring cover composed of one or several parts, fixed on a ring or washer on the bearing, and contact with another ring or washer or form a narrow maze gap to prevent the leakage of lubricating oil and foreign invasion. Second, the role of the sealing ring Sealing ring is a common sealing element, widely used in machinery, automotive, aviation, aerospace, chemical and other fields. Its main function is to prevent liquid, gas, dust and other substances from leaking out of the interface of the machine or equipment to ensure the normal operation and service life of the machine or equipment. 1. Prevent leakage The main function of the sealing ring is to prevent leakage. At the interface of the machine or equipment, due to the influence of working pressure, temperature, vibration and other factors, it is easy to leak. The existence of the sealing ring can effectively prevent this from happening and ensure the normal operation of the machine or equipment. 2. Reduce friction Another function of the seal is to reduce friction. At the interface of the machine or equipment, due to the contact between parts, a certain amount of friction will be generated. The existence of sealing rings can reduce this friction, reduce the degree of wear of the machine or equipment, and extend the service life. 3. Prevent pollution The seal also prevents contamination. In some special working environments, the interface of the machine or equipment may be contaminated by external pollution, such as dust, sand, water, etc. The existence of the sealing ring can effectively prevent these pollutants from entering the machine or equipment and ensure the normal operation of the machine or equipment. 4. Improve efficiency The presence of sealing rings can also improve the efficiency of the machine or equipment. At the interface of the machine or equipment, if there is no sealing ring, there will be leakage, friction and other problems, resulting in reduced efficiency of the machine or equipment. The existence of sealing rings can effectively solve these problems and improve the efficiency of the machine or equipment.