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News And Information
16
2021
-
09
What is a rotary seal? What are the advantages?
Mechanical seals are indispensable in various industrial fields such as construction machinery, construction machinery, automotive equipment, etc. Rotating seals can withstand the two-way action of pressure or alternating pressure on both sides. At present, they have been widely used in rotating or oscillating rods, shafts, Pins, rotary joints, etc., and have been widely praised.
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Mechanical seals are indispensable in engineering machinery, engineering machinery, automotive equipment and other industrial fields,Rotary sealIt can withstand the two-way action of pressure on both sides or alternating pressure. At present, they have been widely used in rotating or oscillating rods, shafts, pins, rotating joints, etc., and have been widely praised.
The rotary seal ring is a seal with a circular cross-section. The sealing part has a simple structure, a compact installation part and a light weight. Resistant to most media, strong chemical resistance; high pressure, wear and high temperature resistance; low friction, no crawling when starting, and continuous movement even at low speed; good dimensional stability; good sealing performance, almost no when used as a fixed seal Leakage, only part of the leakage when used as a dynamic seal at high speed; and has the advantages of standardized size and groove, low cost, easy product access, convenient use and outsourcing, it can be used in some occasions where piston rod or piston seal is required.
The rotary seal ring is usually sealed by the rebound generated by compression, but with the increase of pressure, it is squeezed into the seal turbidity 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 rotary seal ring, attention must be paid to the rubber hardness, the correlation between the size of the seal gap and the pressure level, and the cross-sectional diameter of the rotary seal ring, the design scheme of small compression deformation and good sealing performance should be selected.
At present, most of the mechanical seal designs seen on the market use relatively soft materials to rotate the rotating surface 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 for lubrication. Therefore, in the future development, the major seal manufacturing companies will continue to take the road of innovation and development, constantly strive 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 The sealing surface is properly protected and correctly positioned.
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