Terex
Back-up ring for Terex HC230
This back-up ring is designed to support primary seals in the hydraulic systems of the Terex HC230 crane. It prevents the extrusion and deformation of O-rings under high-pressure operating conditions.
Parts diagram
Compatible models
Specifications
- Part number
- 0752 713 05
- Brand
- Terex
The back-up ring 0752 713 05 serves as a critical support component within the hydraulic assemblies of the Terex HC230 crane. It is engineered to sit alongside primary seals, such as O-rings, to provide structural reinforcement. By occupying the clearance gap between mating surfaces, this component prevents the primary seal from being forced into the gap under high pressure, which effectively stops extrusion and permanent deformation of the sealing element.
This component is specifically sized for the Terex HC230 model. Proper installation ensures that the primary seal remains correctly seated within its groove, maintaining the integrity of the hydraulic circuit and preventing fluid leakage. The manufacturer for this part is Terex.
In hydraulic systems, back-up rings are used in applications where pressure differentials are significant enough to cause seal failure. By providing a rigid surface that resists the pressure, the back-up ring allows the softer primary seal to maintain its shape and function, ensuring consistent performance across the machine's hydraulic cylinders and control valves.

