Back up washer for Link-Belt LS-98

The back up washer PX191 serves as a support component for seals and bearings in various mechanical systems. Its primary function is to provide structural reinforcement, preventing the extrusion of softer sealing elements such as O-rings or lip seals when they are subjected to high pressure or significant clearances. By acting as a spacer or a bearing surface, this component assists in distributing loads and maintaining proper alignment within the assembly.

This component is designed for use in the Link-Belt LS-98 lattice crawler crane. It is commonly found in hydraulic cylinders, the swing mechanism, or wheel hubs, where it protects seals from premature wear and maintains the integrity of hydraulic and lubrication circuits. The washer ensures that seals remain correctly positioned and supported during machine operation.

Back up washers are used in heavy machinery to prevent seal failure caused by pressure-induced deformation. By filling the gap between the seal and the mating surface, they ensure that the seal remains effective throughout its service life. Proper installation of these washers is necessary to maintain the pressure-holding capabilities of the hydraulic systems and to prevent fluid leakage.