Back-up ring for Terex HC230

The back-up ring, part number 0762 136 15, serves as an auxiliary component within the sealing systems of the Terex HC230. It is designed to be installed alongside a primary seal to prevent the material of the seal from extruding into the clearance gap between mating surfaces under high-pressure conditions. By providing mechanical support, this ring limits the deformation of primary seals such as O-rings or rod seals, which is essential for maintaining system integrity during heavy load operations.

This component is compatible with the Terex HC230 crane. It is typically used in hydraulic cylinders where high fluid pressures are present. The part is designed to maintain the shape and positioning of the primary seal, thereby preventing fluid leaks that could impact hydraulic performance. Proper installation of this back-up ring is necessary to ensure the primary seal functions as intended throughout its service life.

Back-up rings are used in various hydraulic and pneumatic assemblies to protect softer sealing elements from damage caused by pressure-induced extrusion. They are generally placed on the low-pressure side of the primary seal to fill the gap between the piston or rod and the cylinder wall.