Back-up ring for Terex HC230

The back-up ring is a component used in conjunction with O-rings within the hydraulic and pneumatic systems of the Terex HC230 crane. It installs into the same groove as an O-ring to provide mechanical support, preventing the seal from extruding or deforming when subjected to high fluid pressures. By maintaining the O-ring in its correct position, this component helps preserve the integrity of the seal assembly and prevents leakage within the machine's fluid circuits.

This part is compatible with the Terex HC230 model and is identified by part number 0762 120 19. It is utilized in various assemblies, including cylinders, valves, and fluid connections, where maintaining consistent pressure is required for operational safety and performance.

In hydraulic and pneumatic systems, back-up rings serve as a rigid barrier that protects softer sealing elements from the effects of high pressure. By filling the clearance gap between mating surfaces, they ensure that the O-ring remains effective and does not fail prematurely due to pressure-induced damage.