Introduction Of O-ring

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 of the O-ring.

For different kinds of fixed sealing or dynamic sealing applications, O-rings provide designers with an effective and economical sealing element. The O-ring is a double-acting sealing element. The initial compression, radial or axial, upon installation, imparts the initial sealing capability of the O-ring itself. The sealing force generated by the system pressure and the initial sealing force are combined into the total sealing force, which increases with the increase of the system pressure. O-rings play a prominent role in static sealing applications. However, O-rings are also often used in dynamic appropriate applications, but are limited by the speed and pressure at the seal.