?Selection of rubber material - Xinhua Xu Hydraulic O-rings

??Hydraulic O-rings used in hydraulic valves in the most common and one of the best sealing effect of the sealing element.

??Hydraulic O-ring seal belonging to extrusion, the basic characteristics of extruded seal structure relying seals elastically deformed, resulting in sealing contact surface of the contact pressure when the contact pressure is greater than the internal pressure of the sealing medium, the sealing function , on the contrary lead to leakage.

??O-ring material Hydraulic many fluorine rubber (FKM), nitrile rubber (NBR) and silicon rubber (VMQ), ethylene-propylene rubber (EPDM), natural rubber (NR), and so commonly used in the hydraulic valve hydraulic type O ring material commonly used fluorine rubber, nitrile rubber and silicone rubber, hydraulic valves to select the appropriate application of rubber material and suitable material capable of O-rings is necessary.

??Such as fluorine rubber O-ring hydraulic anti-flammable and good air tightness, ozone resistance and excellent corrosion resistance. Silicone rubber O-ring is more suitable for ball dust particles media. Nitrile rubber O-rings on the hydraulic oil, acid, wear, chemical and other environmental violations have good sealing, damping effect. Thus, the acidic medium, oil, water, gas, oxidizing and reducing chemical and other mixed media in hydraulic valves can select the appropriate hydraulic O-ring.