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An O-ring is a mechanical gasket with a circular cross-section, typically used for sealing. It is made of materials such as rubber or plastic, so it has a certain degree of elasticity and resistance to compression deformation. During the assembly process, the O-ring is usually compressed by two or more components, resulting in a sealing interface that prevents liquid or gas leakage.

O-ring is widely used in various static and dynamic sealing applications, such as rotating pump shafts and hydraulic cylinder pistons. It has the advantages of cheap price, simple manufacturing, reliable function, and simple installation requirements, so it is widely used as a sealing element.

When sealing a certain component or equipment, choose the appropriate O-ring material and size based on the specific application situation. At the same time, in order to ensure good sealing effect, it is also necessary to install the O-ring correctly. 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.

Overall, O-rings are a common and reliable sealing element widely used in various mechanical equipment. When selecting and using O-rings, 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.