Factors Affecting The Sealing Parts
- Jul 18, 2018 -

Hydraulic seals for the integration of hydraulic pressure plays a vital role, if a hydraulic pneumatic components product seals do not pass, then this piece of hydraulic pneumatic components products is not a good product. There are many aspects of the factors that affect seals. First of all, pressure is an important reason for the quality of seals, pressure, pressure cycle changes in the length of the seal damage (such as extrusion) has a great impact. The higher the pressure, the greater the effect of other factors on the performance of the seals, such as temperature, speed, sealing material, the gap between the piston and the cylinder, and the gap between the piston and the cylinder head. Another is the temperature and friction, the maximum use of a seal material and the minimum temperature of the description is more difficult, because this is a series of factors combined effect of the results. For pistons and piston rods the operating temperature is different, to make a difference between them. There is also a seal product surface roughness, surface characteristics, pressure, media, temperature, sealing materials, seals of the type and speed of these are factors affecting seals. The last one is surface treatment, the experience shows that the piston and piston rod surface characteristics of the cylinder has a very large impact on the life of seals. Surface properties are commonly defined by the value of the surface roughness Ra, which is the arithmetic average of the surface shape deviating from the Central line absolute value. However, some values do not fully represent the effect of the surface conditions on the seals, because even under the same roughness, different surface shape characteristics can lead to different degrees of seal wear of seals.

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