Hydraulic cylinder for hydraulic seal requirements

??(1) hydraulic seal in a pressure 28MPa and 100 ? temperature range, should have good sealing performance, and with the increase of pressure can automatically improve sealing performance.

??(2) the friction between moving parts and seals hydraulic seals to be small, the friction coefficient to be stable, no creeping phenomenon at low speed.

??Strong (3) hydraulic seal corrosion resistance, not aging, long working life, wear resistance, and wear and tear to a certain extent can be automatically compensated.

??(4) hydraulic seals simple structure, easy maintenance, low prices.

??Lip seal sealing pressing force change with medium pressure varies, the work should always be monitored medium pressure changes, which can ensure adequate sealing compression force, but will not generate too much friction, squeeze pressure seal main pressing force generated by the pre-seal strength, seal contact pressure given in advance, the work can not be changed according to the change of media pressure. Great pre-pressure will seal with the sealing surface contact area increases, resulting in a lot of friction, excessive friction can cause damage seals, causing difficulty in starting at low pressures, or produce creeping phenomenon, lip seal lip ring by distraction, distortion compensation small amount of wear to ensure the seal and seal life; and O-rings to reduce friction with the balance directly affects its sealing.

??Common Hydraulic Seals in the form of press type O-ring seal, Y-ring, V-ring, U-ring lip seal. Lip seals are mainly used reciprocating seals, such as O-ring compared with extruded seals, reciprocating seals use lip seal better overall performance, higher service life.

??Hydraulic seals are basic parts industry, but also the industrial automation base member, has been widely used in various industries in the field of industry, agriculture, aviation, aerospace, shipbuilding, metallurgy, mining, etc., to provide a power source to the system plays the role of hydraulic components system is an indispensable component of the core. In order to meet the various sectors of hydraulic, pneumatic sealing increasingly complex and diverse requirements, the sealing material has also been rapid development. More and more of its kind, physical and chemical properties continues to increase. Sealing performance of the pros and cons, and the correct selection, proper design, proper installation are closely related.