The O-ring is a rubber sealing ring with a circular cross-section. Its simple design, easy installation, and good sealing performance have been widely used in the sealing of various mechanical equipment and products. The advantage of O-rings is that they can adapt to a variety of sealing forms (static sealing, dynamic sealing) and have good sealing effects on different sealing media (such as oil, water, gas, chemical media, etc.). In addition, O-rings also have the advantages of a wide variety of materials, low cost, and low dynamic friction resistance, making them one of the most widely used seals in hydraulic and pneumatic transmission systems
