??Xinhua Xu performance hydraulic seals

??Xinhua Xu Hydraulic O-ring, square, star, etc., the hydraulic seal has a simple structure, easy to manufacture, low cost, etc., so that they are movable sealing element widely used in the hydraulic system and the static sealing element.

??Hydraulic sealing ring mounted in the groove 10 to 25% generally produces a radial compressive deformation, and the sealing surface to produce a higher initial contact stress, thereby preventing the leakage of fluid without pressure. Hydraulic cylinders working, self-sealing pressure liquid extrusion pressing hydraulic seal, so that further deformation, and the sealing surface pressure is greater with the pressure of the liquid, strictly speaking, should pressure. Additional contact stress increased and increased, and the initial contact stress together and prevent pressure liquid leakage.

??But when the hydraulic seal working pressure greater than 10MPa, in order to avoid self-styled pressed synthetic rubber hydraulic seal portion is extruded sealing gap is cut in the cylinder reciprocating motion caused by leakage shall be synthetic rubber self-styled pressed side pressed hydraulic seals each provided with a synthetic resin retainer, has a large compressive deformation due synthetic rubber self-sealing ring pressing hydraulic work, so the static friction is particularly large, usually twice more dynamic frictional resistance. Such a large number of static friction in the low-pressure hydraulic system is bound to cause low pressure crawling and operating difficulties undesirable phenomena, which is self-sealing hydraulic clamping ring used alone as a small movable seal reason.

??Xinhua Xu Hydraulic seals:

??Xinhua Xu a small hydraulic seal leakage. Requirements hydraulic seal leakage is extremely small, has a good seal, and with the increased pressure of the hydraulic oil automatically improve its sealing effect, even at high pressure and high temperature and other harsh working conditions, hydraulic seal leakage and no significant increase;

??Two hydraulic seal Xinhua Xu good compatibility. Due to long-term immersion hydraulic seal in the hydraulic oil, highly swollen, dissolved or hardened embrittlement, so that the loss of sealing effect, thus requiring hydraulic seals for hydraulic oil has good compatibility;

??Xinhua Xu three hydraulic seal friction is small. To avoid or reduce the low-pressure hydraulic equipment generates negative phenomena such as crawling, requiring hydraulic seal has a low static friction and dynamic friction, and the friction coefficient should be very stable;

??Xinhua Xu four hydraulic seal and long service life. Hydraulic seal should have good elasticity, heat resistance, cold resistance, pressure resistance, abrasion resistance and a certain physical and mechanical strength, and long service life; Fifth, is the low price. Hydraulic seal should be easy to manufacture and install, and its respective sealing groove and ease of manufacturing, precision machining sealing surface requirements and low, low and low grid.

??The basic requirement is to seal tightness, safety and reliability, long life, and should seek a compact, simple system, easy maintenance of manufacturing and low cost. Most seals are wearing parts, should ensure interchangeability, standardization, serialization.