Back-up washer for Link-Belt LS-98

The 1C280 back-up washer serves as a structural support component within the sealing systems of Link-Belt machinery. By providing a firm base for primary seals such as O-rings, this washer prevents the seal from deforming or extruding into the clearance gap when subjected to high operating pressures. Its presence ensures that the primary seal maintains its intended shape and position, which is necessary for managing fluid containment within hydraulic and pneumatic circuits.

This component is compatible with Link-Belt LS-98 and LS98PL crane models. It is typically installed in hydraulic cylinders, valves, and other assemblies where seals encounter significant pressure and mechanical movement. Proper installation is required to ensure the washer fits correctly without interfering with the sealing surface or the movement of the associated components.

In general engineering, back-up washers are used in high-pressure applications to protect softer sealing elements. They are manufactured from materials that resist compression and wear, allowing them to bridge the gap between mating surfaces. By limiting the deformation of the primary seal, these washers help maintain the integrity of the hydraulic system and prevent leaks that could otherwise lead to a loss of pressure and operational efficiency.