Back-up ring for Terex HC230

The back-up ring is a mechanical support component used within the hydraulic and pneumatic circuits of the Terex HC230 crawler crane. It is installed adjacent to dynamic seals, such as O-rings or piston seals, to prevent the seal material from extruding into the clearance gap under high pressure. By providing a rigid interface, this component ensures that the primary seal remains properly seated and retains its shape during operation.

This part is compatible with the Terex HC230 crane. It is engineered to withstand the operational pressures found within hydraulic cylinders and valve assemblies. The component functions by filling the space between the seal and the housing wall, which prevents deformation and potential leakage in high-pressure environments. By maintaining the position of the primary seal, it helps preserve the overall sealing performance of the hydraulic system.