??Effect of working medium on rubber O ring

??The working pressure of modern hydraulic equipment is increasing day by day. Long time high pressure will cause the rubber O - ring to be permanently deformed. The pressure of working medium is the main factor to cause the permanent deformation of rubber O ring. Therefore, the design should be based on the working pressure of the selection of appropriate pressure rubber material. The higher the working pressure, the higher the hardness and the high pressure resistance of the materials used.

??For now is increasing the efficiency of the equipment, improve the pressure resistance of the rubber O-ring materials and increase the material elastic (especially increase elastic materials at low temperatures), reduce the material compression permanent deformation situation in need, general improvement of material formulation, adding plasticizing agent. But, with plasticizing agent of O sealing ring type, for a long time in the working medium soaking, plasticizer will gradually be working medium absorption, leading to O type rubber sealing ring volume shrinkage, may even make the O type sealing ring produce negative compression (namely in the O type sealing ring and sealed the surface gap). Therefore, in the calculation of O type sealing ring compression and mold design, should fully take into account these shrinkage. Should be pressed out of the O type sealing ring in the working medium to soak 5~10 day and night after the still can maintain the necessary size.

??Xinhua Xu rubber products company will continue to progress, to meet customer requirements, improve the ingredients for the rubber O-ring, more special requirements welcome to Xinhua Xu consulting!