Back-up ring for Terex TX760B

The back-up ring, part number 378543X1, is a component used within the hydraulic system of the Terex TX760B backhoe loader. It is specifically installed as part of the loader lift cylinder assembly to support the O-ring seal. By providing a rigid backing, the ring prevents the O-ring from extruding or deforming when the hydraulic system is subjected to high operating pressures. This component is located within the loader hydraulics subsystem and helps maintain the integrity of the seal, which is necessary for consistent lifting performance.

This part is compatible with the Terex TX760B loader lift cylinder. Back-up rings are used in hydraulic systems to ensure that seals remain seated within their grooves during operation. When hydraulic pressure increases, the O-ring may be forced into the clearance gap between mating surfaces; the back-up ring fills this gap to maintain the seal's shape and function, thereby preventing fluid leaks and maintaining system pressure.