A, temperature,

Frozen rubber seals will be brittle, elasticity is reduced, cause air leakage. In the process of moving, high temperature can make the rubber seal volume expansion, soft, rubber seal friction resistance increases rapidly, compression performance degradation, suggested rubber seal working temperature for - 10 ℃ ~ + 80 ℃. If increase movement speed, surface roughness, factors such as poor lubrication, can produce friction calorific, affect the rubber seals.

Second, the pressure.

There is starting pressure cylinder body, the work pressure, impact force. Low voltage operation need friction performance is poor, starting small resistance of the seal. Under the high pressure to consider the deformation of rubber seal compression, need the support ring. In addition, different materials of rubber seal working pressure range. Maximum pressure range in age from 25 to 315 bar between the rubber seal. Can be used to improve the compression performance, high strength rubber back ring and unique lip design, so it can improve the ability of bear certain pressure. Temperature effect on the properties of rubber seal pressure is connected with each other, must be considered.

Third, working medium.

Except in strict accordance with the manufacturer recommends working medium, keep the working medium clean is also very important. Aging or pollution of the oil solution, not only can lead to system component failure, and accelerate the aging of rubber seals and wear and tear, and the dirt inside the cylinder can be scratched or embedded in the rubber seal, the residual after high-pressure compressed air in cylinder is formed by high temperature, make the seal burned, even carbonization. In order to prevent the occurrence of this problem, at the beginning of the hydraulic system, exhaust gas treatment must be conducted. Hydraulic cylinder should also be in low pressure slow running several minutes, to confirm that air in cylinder has to work properly after discharge.

Four, impact pressure

Pressure will be had a big impact on the oil cylinder, except for high pressure, large flow hydraulic system, components of commutation, if reversing valve performance is not good or poorly designed, it is easy to produce hydraulic impact, such a high pressure in a very short period of time will be the rubber seals to squeeze into the gap, or tear cover gasket, causing serious damage to the rubber seals. Common with hydraulic impact cylinder is installed on the piston ring buffer and support ring. Absorb most of the shock pressure in front of the sealing ring buffer ring, support ring to prevent rubber seals at high pressure extrusion to the aperture of sealing ring, tearing damage.