Seals Influencing Factors

Hydraulic seals for hydraulic pneumatic unity plays a vital role, if a hydraulic pneumatic components product seals do not pass, then this hydraulic pneumatic components product is not a good product. There are many factors affecting the seals. First of all, the pressure is an important reason that affects the seal is good or bad, the pressure of the high and low pressure cycle changes in the length of the seal damage (such as extrusion) has a great impact. The higher the pressure, the greater the impact of other factors on the performance of seals, such as temperature, speed, seal materials, piston and cylinder clearance between the cylinder, piston and cylinder head clearance. Another factor is temperature and friction. It is difficult to characterize the maximum and minimum service temperatures of a seal material because it is the result of a combination of factors. It is difficult to characterize the maximum and minimum service temperatures of a seal material because it is the result of a combination of factors. The operating temperatures of pistons and piston rods are different, so it is necessary to select them differently. There is also the surface roughness of the seal product, surface characteristics, pressure, medium, temperature, seal material, seal type and speed of movement are all factors that affect the seal. The last one is the surface treatment, experience shows that the cylinder piston and piston rod surface characteristics of the seal has a very big impact on the life of the seal. Surface properties are often defined by the value of surface roughness RA, which is the arithmetic mean of the absolute values of surface shape deviations from the centerline. However, these values do not fully characterize the effect of surface conditions on seals because different surface characteristics can result in different degrees of seal wear even at the same degree of roughness.