Back-up ring for Terex HC230

The back-up ring, part number 0762 136 55, serves as a support component within the hydraulic sealing systems of the Terex HC230 crane. It is installed alongside an O-ring or similar seal to prevent the seal from extruding or deforming when subjected to high operating pressures. By providing a rigid interface, this component helps maintain the structural integrity of the seal, which is necessary for preventing fluid leaks in hydraulic actuators.

This component is specifically compatible with the Terex HC230 model. It is designed to function within the hydraulic circuits of the machine, including the boom and outrigger systems where pressure management is required for consistent operation.

Back-up rings are used in hydraulic systems to bridge the gap between mating surfaces, such as those found in cylinders or valves. By filling the clearance space, they allow the primary seal to function effectively without being forced into the gap by hydraulic pressure. This prevents premature seal failure and maintains the efficiency of the hydraulic circuit.