Back-up ring for Terex HC230

The back-up ring, part number 0782 409 14, functions as a support component within the sealing assemblies of the Terex HC230 crawler crane. It is positioned adjacent to primary seals or O-rings to prevent them from deforming or extruding out of their housing when the system is subjected to high operating pressures. By maintaining the structural integrity of the primary seal, this component helps prevent fluid leakage in hydraulic and pneumatic circuits.

This component is compatible with the Terex HC230 model. It is designed to fit alongside standard sealing elements within cylinders, valves, and other pressurized hydraulic assemblies found on the machine. Proper installation of this ring ensures that the primary seal remains correctly seated within its groove during operation.

Back-up rings are used in heavy machinery to protect elastomeric seals from the effects of high pressure and clearance gaps. By providing a rigid surface on the low-pressure side of the seal, the back-up ring prevents the seal material from being forced into the gap between mating parts. This support is necessary for maintaining the pressure-holding capability of hydraulic systems in demanding mechanical applications.