Back-up ring for Link-Belt LS-98

The back-up ring acts as a structural support for dynamic seals within high-pressure hydraulic systems. By filling the clearance gap between the seal and the groove wall, this component prevents the seal from deforming or extruding under high operating pressures. This maintains the integrity of the sealing system and prevents fluid leakage within the hydraulic circuits of the machine.

This component is compatible with the Link-Belt LS-98 lattice crawler crane. It is designed to be installed alongside primary seals in hydraulic cylinders, such as those controlling the boom, arm, or bucket functions, where pressure levels are high. Proper installation of this part ensures that the primary sealing elements remain in their intended position, which is necessary for the consistent operation of the crane's hydraulic actuators.

In heavy machinery, back-up rings are used to protect O-rings and other soft seals from the mechanical stresses caused by pressurized hydraulic fluid. By providing a rigid surface that resists extrusion, the back-up ring allows the primary seal to function effectively without being forced into the gap between mating parts. This is a standard practice in maintaining the hydraulic efficiency of cranes and similar heavy equipment.