Back up ring for Grove TM150

The back up ring 6753000300 serves as a support component within the hydraulic sealing systems of heavy machinery. It provides structural reinforcement to dynamic seals, such as O-rings or piston seals, to prevent them from deforming or extruding into the clearance gap when subjected to high operating pressures. By maintaining the seal material within its designated groove, this component ensures the integrity of the sealing assembly and helps maintain effective pressure containment.

This part is compatible with the Grove TM150 truck-mounted crane. It is typically installed within hydraulic cylinders, including those used for boom and outrigger operations, where internal pressures are significant. Proper installation is required to support the primary seal and ensure the hydraulic system operates within its design parameters.

Back up rings are used in hydraulic systems to bridge the gap between mating surfaces, preventing seal damage caused by pressure-induced deformation. They are installed alongside primary seals in cylinders and actuators to protect the sealing element from high-pressure fluid forces that would otherwise cause the seal to extrude and fail prematurely.