Terex
Back-up ring for Terex HC230
This back-up ring is designed for the Terex HC230 crane. It provides structural support to seals and gaskets to prevent extrusion under pressure.
Parts diagram
Compatible models
Specifications
- Part number
- 0781 302 21
- Brand
- Terex
The back-up ring, identified by part number 0781 302 21, serves as a support component within the hydraulic and pneumatic systems of the Terex HC230 crane. It is installed adjacent to a primary seal, such as an O-ring, to reinforce the sealing assembly and prevent the seal material from deforming or extruding into the clearance gap between mating surfaces when the system is under load.
This component is compatible with the Terex HC230 crane model. It maintains the integrity of the sealing system, which is necessary for the operation of hydraulic cylinders, valves, and other pressurized assemblies found in heavy machinery.
In general engineering, back-up rings are used in fluid power systems to protect softer sealing elements from high-pressure conditions. By bridging the gap between moving parts, they ensure that the primary seal remains in its correct position, thereby preventing fluid leakage and maintaining system pressure during dynamic operations.