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O-shaped rubber sealing ring is a type of rubber sealing ring with a circular cross-section, named after its shape similar to the English letter "O". It is a widely used sealing element that can be used in various mechanical equipment to perform sealing function under specified temperature, pressure, and different liquid and gas media, in static or moving states.

The sealing principle of an O-ring is that during installation, it is compressed and generates initial compression in the radial or axial direction, which determines its initial sealing capacity. When the system pressure acts on the O-ring rubber seal, a sealing force will be generated, and as the system pressure increases, the sealing force will also increase. Under pressure, the shape of the O-ring changes, similar to a liquid with high surface tension, thereby achieving pressure transmission.

The characteristics of O-ring rubber seals include small size, easy installation and disassembly, both dynamic and static seals are available, static seals have almost no leakage, single piece use of bidirectional seals, low dynamic friction, and low price. In rotary motion seals, O-ring rubber seals are limited to low-speed rotary sealing devices. It is mainly used for installation on various mechanical equipment, and plays a sealing role in specified temperature, pressure, and different liquid and gas media under static or moving conditions.

The O-ring rubber seal is one of the most widely used seals in hydraulic and pneumatic transmission. It is an extrusion type seal that will not leak when the seal undergoes initial deformation and stress Pseal, Pw>Pseal. Its sealing effect and service life are closely related to the performance of the material, and generally need to be used in conjunction with grooves.

The above information is for reference only. If necessary, we suggest that you consult relevant websites.