Terex
Back-up ring for Terex HC230
This back-up ring supports primary seals in the hydraulic systems of the Terex HC230 crawler crane. It prevents seal extrusion in high-pressure applications by providing mechanical reinforcement to O-rings and other primary sealing components.
Parts diagram
Compatible models
Specifications
- Part number
- 0762 135 85
- Brand
- Terex
The back-up ring 0762 135 85 serves as an auxiliary sealing component within the hydraulic systems of the Terex HC230 crawler crane. Its primary function is to provide mechanical support to a primary seal, such as an O-ring, in applications where high pressure or significant clearances between mating parts exist. By preventing the primary seal from being extruded or deformed under pressure, this component maintains the integrity of the hydraulic assembly. It is designed to work in conjunction with primary seals to ensure the system remains leak-free during operation.
This part is compatible with the Terex HC230 crawler crane. It is identified by the specification G85-T3, which relates to its dimensions and material properties. Proper installation of this back-up ring is necessary for the maintenance of cylinders, valves, and hydraulic connections throughout the machine.
In heavy machinery, back-up rings are used to bridge the gap between moving or stationary parts to protect softer sealing elements. They allow hydraulic systems to operate at higher pressures without risking seal failure, ensuring that fluid remains contained within the intended circuits.

