Hydraulic sealing element Lei ring

Lei ring is usually composed of a composite rubber O-ring and a Y-shaped sealing ring sandwiched with rubber resin. Like self sealing compression hydraulic seals, self sealing tight hydraulic seals, and lip seals, it generates high initial contact stress on the sealing surface according to its own deformation, preventing the leakage of pressureless liquid. When the hydraulic cylinder is in operation, the pressure liquid always compresses and opens the sealing lip of the Y-shaped sealing ring through the elastic deformation of the O-shaped sealing ring, causing it to closely adhere to the sealing surface and generate a higher additional contact stress that increases with the pressure of the pressure liquid. Together with the initial contact stress, it prevents the leakage of the pressure liquid.