Back-up ring for Terex HC230

The back-up ring with part number 0758 719 14 functions as an auxiliary component within the hydraulic sealing systems of the Terex HC230 crane. It is positioned adjacent to primary seals, such as O-rings, to provide mechanical support and prevent the seal from extruding or deforming when subjected to high operating pressures. By maintaining the structural integrity of the primary seal, this component helps preserve the overall effectiveness of the hydraulic circuit.

This specific back-up ring is compatible with the Terex HC230 model. It is designed to work in conjunction with standard sealing elements to ensure that the hydraulic systems maintain their intended pressure capacity and prevent fluid leakage during operation.

In heavy machinery, back-up rings serve as critical support members in high-pressure hydraulic assemblies. Because primary seals are often made of softer, flexible materials to ensure a tight fit, they are susceptible to being forced into the clearance gaps between mating parts under load. The back-up ring fills this gap, providing a rigid surface that keeps the primary seal in its correct position and prevents premature failure caused by extrusion.