Backup ring for Terex HC230

The backup ring, part number 0782 410 13, serves as a support component within the hydraulic and pneumatic circuits of the Terex HC230 crane. It is installed alongside primary dynamic seals, such as O-rings, to prevent them from being forced out of their grooves or deforming when the system is subjected to high operating pressures. By maintaining the structural integrity of the seal, this component ensures that hydraulic systems remain leak-free during crane operations.

This backup ring is specifically engineered for fitment in the Terex HC230 model. It acts as a mechanical barrier that prevents seal extrusion, which is a common failure mode in high-pressure hydraulic cylinders and valves. By keeping the primary seal in its correct position, the ring allows the sealing assembly to function effectively even under significant load. Regular inspection and replacement of these rings are standard practices for maintaining the pressure-retaining capabilities of hydraulic cylinders and associated control valves in heavy machinery.