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The O-ring seal is a common mechanical design for sealing, named after its O-shaped cross-section. It has various excellent characteristics, such as small size, easy assembly and disassembly, both dynamic and static seals are available, static seals have almost no leakage, single piece use of bidirectional seals, low dynamic friction, low price, etc., so 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. The selection of its material is of great significance for its sealing performance and service life, and the performance of the material directly affects the performance of the sealing ring.

When selecting and using O-ring seals, it is necessary to consider the performance and applicability of their materials, as well as the correct installation method, to ensure their good sealing effect and service life. Before installation, it is necessary to clean the installation surface to ensure that there are no impurities or oil stains. Then, install the O-ring in the groove to ensure that it fits tightly with the groove and has a certain initial compression amount. This can improve the sealing effect and service life of the O-ring.

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