A hydraulic cylinder seal comprising a sealing element—designed as a hollow ring with a retainer—and two support rings that form a piston and a rod; the rod contains channels connecting the cavities of the sealing element to the cavities of the hydraulic cylinder. The seal is characterized in that the rod further incorporates a two-slot spool valve assembly featuring a two-land spool that is spring-loaded from both sides; the channels connect the hydraulic cylinder cavities to the corresponding actuation cavities of the spool valve assembly, while the slots of the spool valve assembly are connected to the cavity of the sealing element.
A hydraulic cylinder seal comprising a sealing element—designed as a hollow ring with a retainer—and two support rings that form a piston and a rod; the rod contains channels connecting the cavities of the sealing element to the cavities of the hydraulic cylinder. The seal is characterized in that the rod further incorporates a two-slot spool valve assembly featuring a two-land spool that is spring-loaded from both sides; the channels connect the hydraulic cylinder cavities to the corresponding actuation cavities of the spool valve assembly, while the slots of the spool valve assembly are connected to the cavity of the sealing element.
