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2021

What is the role of rotating sealing ring?

The rotating sealing ring is a kind of circular cross-section seal. It has the advantages of simple seal structure, compact installation parts, and light weight. It is resistant to most media and has strong chemical resistance; it is resistant to high pressure, wear and high temperature; it has low friction, It does not crawl when starting, and can continue to move even at low speed; good dimensional stability; good sealing performance, almost no leakage when used as a fixed seal, and only partial leakage when used as a dynamic seal; and it has the advantages of standardization of size and groove, low cost, easy access to products, convenient use and outsourcing, and can be used in some occasions that require piston rod or piston seal.

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In various industrial fields such as construction machinery, construction machinery, automotive equipment, etc., mechanical seals are essential. The rotating sealing ring can withstand the two-way action of pressure on both sides or alternating pressure. It has been widely used in rods, shafts, pins, and rotary joints. Places with rotating or swinging motion are widely praised.

　　Rotating seal ringIt is a kind of seal with a circular cross section. It has the advantages of simple seal structure, compact installation parts, and light weight. It is resistant to most media and has strong chemical resistance; it is resistant to high pressure, wear and high temperature; it has low friction and does not start Crawling, it can continue to move even at low speed; good dimensional stability; good sealing performance, almost no leakage when used as a fixed seal, only partial leakage when used as a dynamic seal; and it has the advantages of standardization of size and groove, low cost, easy access to products, convenient use and outsourcing, and can be used in some occasions that require piston rod or piston seal.

Generally, the rotating sealing ring is a rebound seal generated by compression, but with the increase of pressure, it is squeezed into the sealing gap and its shape changes. Therefore, in order to make it have a good sealing effect and prolong its service life, in the design process of the rotating sealing ring, attention must be paid to the relationship between rubber hardness, sealing gap size and pressure level and the cross-sectional diameter of the rotating sealing ring, and the design scheme with small compression deformation and good sealing performance is selected.

At present, most of the mechanical seal designs seen on the market are made of soft materials, which make the rotating surface rotate and rub on the hard stationary surface. No matter what material is used, a layer of liquid film must be maintained between the contact surfaces to play the role of lubrication. Therefore, in the future development, major seal manufacturing companies will continue to take the road of innovation and development and make continuous efforts to improve the straightness of the contact surface of the rotating seal ring, carefully handle these seal contact surfaces and strictly follow the installation instructions to ensure that the seal surfaces are properly protected and correctly positioned.

Key words:

Rotary seal,Rotating seal ring