Back-up ring for Terex HC230

The back-up ring, identified by part number 0759 044 05, serves as an auxiliary sealing component within the hydraulic and pneumatic systems of the Terex HC230 crawler crane. Its primary function is to provide mechanical support to a primary seal, such as an O-ring, preventing it from being forced out of its groove when subjected to high operational pressures. By maintaining the position of the primary seal, this component helps ensure the overall integrity of the hydraulic assembly.

This component is specifically engineered for the Terex HC230. Back-up rings are commonly utilized in hydraulic cylinders, valves, and other assemblies where seals encounter significant pressure differentials. They are typically manufactured from materials that offer resistance to extrusion and low friction, such as PTFE, nylon, or polyacetal. Depending on the specific application and available space, these rings may feature a solid, split, or spiral design to facilitate installation and ensure a precise fit within the groove. By supporting the primary seal, the back-up ring maintains the hermetic seal of the system and protects internal components from the effects of fluid leakage and pressure loss.