Back-up ring for Terex HC230

The back-up ring, part number 0758 698 08, serves as an auxiliary sealing component for the Terex HC230 crane. It is designed to work in conjunction with dynamic seals, such as O-rings, within the hydraulic and pneumatic systems of the machine. By providing mechanical support, it limits the deformation of the primary seal and prevents material extrusion into the gap between sealing surfaces when the system is subjected to high pressure.

This component is compatible with the Terex HC230 and is used in various high-pressure hydraulic applications, including lifting cylinders, boom extension systems, and steering assemblies. It ensures that primary seals maintain their integrity and function, which helps prevent internal and external fluid leaks that could otherwise impact the operational precision of the crane.

In hydraulic systems, back-up rings are used to bridge the clearance gap between mating parts. This prevents the primary seal from being forced into the gap, which is a common failure mode in high-pressure environments. By maintaining the shape and position of the seal, the back-up ring ensures consistent performance across the hydraulic circuit.