D A W Seals

In some applications, the instructions or conditions require the use of double-acting wiper seals. This is the case in medium or heavy duty applications such as in hydraulic cylinders for construction equipments or when, in order to achieve low friction, a rod seal type providing too high an oil transport has to be chosen. Most of the oil transport passing the rod seal is gathered in front of the wiper seal and returns into the system with the rod through the rod seal at the return stroke.At extremely heavy duty service conditions with intense and long-term stroke changes resulting in pressure being trapped between wiper and rod seal, a metal reinforced double-acting wiper seal should be used and be fixed with a retainer ring