Back-up ring for Terex HC230

The back-up ring, part number 0762 135 55, serves as a support component within the hydraulic sealing assemblies of the Terex HC230 crane. It is installed adjacent to primary seals, such as piston or rod seals, to bridge the extrusion gap between mating metal surfaces. By providing this mechanical reinforcement, the ring prevents the primary seal from deforming or extruding into the clearance gap when the hydraulic system is subjected to high operating pressures.

This component is compatible with the Terex HC230 crane model. The specification 655-T3 is associated with this part. In hydraulic systems, back-up rings are used to maintain the structural integrity of the sealing arrangement, particularly in high-pressure applications where the primary seal material might otherwise be forced into the gap between moving parts. By ensuring the seal remains in its designated position, the back-up ring helps maintain system pressure and prevents fluid leakage within the hydraulic cylinders of the machine.