Hydraulic seals are suitable for cases where the leakage is extremely small and have a good sealing effect.

Characteristics of hydraulic seal

1. Good compatibility, because the hydraulic seal is soaked in hydraulic oil for a long time, it is very easy to swell, dissolve or embrittle and harden, etc., so that it loses the sealing effect, so the hydraulic seal is required to have good compatibility with the hydraulic oil. 
2. In order to avoid or reduce the undesirable phenomena such as low-pressure crawling caused by hydraulic equipment, hydraulic seals are required to have low static friction resistance and dynamic friction resistance, and their friction coefficients should be very stable. 
3. Long service life, hydraulic seals should have good elasticity, heat resistance, cold resistance, pressure resistance, wear resistance and a certain physical and mechanical strength, etc., and have a long service life. 
4. The price is low, the hydraulic seal should be easy to manufacture and install, the corresponding sealing groove is easy to process and manufacture, and the requirements for the processing accuracy of the sealing surface are low, and the low grid is low.

What are the types of hydraulic seals?

The commonly used hydraulic combination seals are mainly composed of the superposition of O rings and square sealing rings, U-shaped sealing rings, Y-shaped sealing rings, YX-shaped sealing rings and other special shapes of hydraulic sealing rings.