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An O-ring is a rubber sealing ring with a circular cross-section, named after its O-shaped cross-section, also known as an O-ring. It is the most common mechanical design for sealing, with simple manufacturing, reliable functionality, simple installation requirements, and low price, therefore it is widely used in various mechanical equipment.

O-rings can withstand pressures of tens of megapascals (kilopounds) and can be used in static applications or dynamic applications where there is relative motion between components, such as rotating pump shafts and hydraulic cylinder pistons. Its sealing performance is excellent, suitable for various media such as water, oil, gas, etc., and can work normally in harsh environments such as high temperature, low temperature, corrosion, etc.

When selecting and using O-rings, it is necessary to consider their material properties and applicability. For example, some materials have good high-temperature resistance and are suitable for high-temperature environments; Other materials have good corrosion resistance and are suitable for corrosive media. In addition, when installing the O-ring, it is also necessary to choose the correct size and installation method based on the specific application situation to ensure its good sealing effect and service life.

In short, O-ring seals are a common and reliable sealing element, which are widely used and have multiple excellent characteristics.