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Material and installation requirements for hydraulic seals

by:ORK      2022-10-14
In general, the sealing performance of the sealing device determines the degree of leakage of hydraulic cylinders and other types of hydraulic seals. Therefore, when inspecting the hydraulic system and hydraulic seals, special attention should be paid to the small parts of the seal. In order to make the hydraulic system work normally, the following requirements must be made for the material and sealing device of the hydraulic seal: (1) It has good sealing performance. Within the specified working pressure and working temperature range, it has good sealing performance. When conditions permit, the sealing device is required to automatically improve its sealing performance with the increase of the working pressure, so that the leakage will not occur due to the increase of pressure. Excessive growth. (2) Good wear resistance. Hydraulic seals must have the properties of low wear during production and use, good wear resistance, long service life, and can automatically compensate for the worn gap to a certain extent. (3) It has good oil resistance and corrosion resistance, and is not easy to age. (4) The friction coefficient is small and the friction force is uniform. No piston rod caused by excessive friction“crawl”or stuck. (5) It has good temperature resistance. It can adapt to the requirements of different conditions and temperature of the hydraulic system. (6) Easy to manufacture, low cost, easy to use and simple to maintain. (7) Standardized structure and size are adopted, and the pre-compression amount and the installation groove size and machining accuracy of the seal are reasonably selected.
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