??Structure and properties of hydraulic seals

??Hydraulic seals mainly by the O-ring seals and hydraulic square, U-shaped hydraulic seals, Y-shaped hydraulic seals, hydraulic seals YX-shaped hydraulic seals and other special shapes superimposed using the composition.

??Preferably V-shaped hydraulic seal sealing performance, can be used to determine the number of seals in accordance with the size of the working pressure, normally be compensated by adjusting the amount of wear of the gland seal rings, its Achilles heel is the structure of complex, often shall support ring, ring and pressure ring consists of three parts, the frictional resistance is large.

??Preferably U-shaped hydraulic seal sealing performance, but when used alone easily rolling, and therefore required quality bronze bearing ring supporting the use of larger and friction with increasing working pressure increases. Therefore, U-shaped ring is only suitable for low working pressure or lower velocity using the hydraulic cylinder.

??Y-shaped hydraulic seal is relying on its open lips sealed while maintaining close contact with the sealing surface, usually can be used alone, better sealing performance, friction is small, good pressure resistance, good job stability, long life. Therefore, Y-shaped hydraulic seal is suitable for high-speed swing, large bore, long stroke hydraulic cylinder use.

??YX-shaped hydraulic seal is a cross-sectional height to width ratio greater than 2 and working and non-working lip contour lip is not the Y-shaped ring, it is divided into the hole with YX-shaped hydraulic seals and hydraulic shaft YX-shaped ring, which Like sealing performance, in addition to all the advantages of having a Y-shaped outer ring, YX-ring when used alone will not roll further improve its pressure resistance and job stability. Therefore YX-shaped hydraulic seals are particularly suitable for high pressure hydraulic cylinders and fast high-speed swing motion adopted.

??Construction Machinery hydraulic seal materials management personnel management work matching process, only a profound analysis of the working principle and system requirements, master the structure of various types of hydraulic seals, sealing mechanism, material properties, and other key performance purposes, in order to repair process the correct matching in line with the requirements of hydraulic seals, to ensure the normal operation of construction machinery and improve economic efficiency of enterprises.

??Xinhua Xu Tips:

??There are hydraulic seal effectiveness

??(1) mechanical damage squeeze destruction;

??(2) seals aging, cracks or cracks;

??(3) chemical etching of the seal;

??(4) local ablation, carbonization;

??(5) the surface of serious wear and tear;

??(6) Deformation kink.