O-ring O-ring is a rubber ring with a circular cross-section. Because its cross-section is O-shaped, it is called an O-ring. It is the most widely used one in hydraulic and pneumatic transmission systems.
O-rings are annular rubber seals with a circular cross-section. They are mainly used for mechanical parts to prevent leakage of liquid and gaseous media under static conditions. In some cases, O-rings can also be used for axial reciprocating motion and dynamic sealing elements with low-speed rotary motion. According to different conditions, different materials can be selected to suit it.
O-rings are usually selected as large-section O-rings as far as possible. In the case of the same gap, the volume of the O-rings squeezed into the gap should be smaller than the maximum allowable value for the O-rings to be squeezed into.
