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03
2023
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01
What are the advantages of piston rod seal?
The piston rod seal is actually a combination seal, which is pre-stressed by the O-ring to compensate the initial state and work; the product is filled with graphite, copper powder, carbon fiber and other additives, which can effectively reduce friction resistance. Improve wear resistance; Due to the combined application, the contact between metals can be avoided, the supporting capacity can be significantly improved, and it can withstand a certain lateral force.
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Piston rod sealIn fact, it is a combination seal, which is pre-stressed by O-ring to compensate the initial state and work; the product is filled with graphite, copper powder, carbon fiber and other additives, which can effectively reduce friction resistance. Improve wear resistance; Due to the combined application, the contact between metals can be avoided, the supporting capacity can be significantly improved, and it can withstand a certain lateral force; In fact, the product still meets the requirements of high pressure resistance and high allowable line speed when used. The piston rod seal has a small leakage and has a pumping function. In addition, its life is relatively long, because the main material of the piston rod is metal, which is mainly the tension generated by the elastic force, so even if there is wear, the life of the piston rod seal is still very long.
The piston rod seal is durable; more suitable for high-speed action. Even if the piston speed exceeds 1000mm per second, the material will never burn out due to local overheating, and the sealing performance can always be maintained constant; the piston rod seal is not affected by the type of hydraulic oil. Since the seal is made of rubber, the material needs to be changed according to the type of hydraulic oil. But there are also relatively cast iron and phosphor bronze materials. Material, so in addition to the problem of anti-rust, it will not be affected by the type of working oil. Of course, there are some shortcomings in use. For example, oil leakage is mainly due to metal contact and sealing between the cylinder surface and the piston ring, so even if the processing accuracy is improved, oil leakage will still occur, and it is mainly due to the cylinder force. Under normal circumstances, the piston cannot be maintained for a long time Work in the same position; or compared with the U-shape, the cost is much higher; of course, it should be noted that the inner surface of the cylinder may need chrome plating or other treatment.
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