??Hydraulic O type of surface adhesion of the surface dust and sand, etc., these surface abrasive friction will accelerate the wear of hydraulic O ring so that it loses its sealing performance.

??The roughness of the sliding surface of the hydraulic O type ring is also a direct factor to influence the wear of the O ring.

??Generally speaking, the surface of the O type hydraulic m is smooth, and the friction and wear are small, so the roughness value of the sliding surface is usually very low.However, experiments show that the surface roughness is too low (Ra below 0.050 m) and will bring adverse effects on friction and wear. This is because of the uneven surface of small, can maintain the essential lubricating oil film. Therefore, to select the appropriate surface requirements.

??The material of the hydraulic O type ring surface has an influence on the life span of the O type ring. The greater the hardness of rubber surface material, the higher the wear resistance, the stronger the ability to maintain smooth finish, the longer the life of the hydraulic O type circle. This is also an important reason for the hydraulic cylinder piston rod surface chrome plating. Empathy can be explained with the same rough degree of copper, aluminum alloy made of sliding surface sliding steel surface on the sealing ring friction and wear is more serious, low hardness, compression of the sealing ring as high hardness, small amount of compression of the sealing ring and durable than.