Back up ring for Link-Belt 5800Q

The back up ring LBB0112 functions as a support component within hydraulic and pneumatic sealing systems. It prevents the primary seal, such as an O-ring, from extruding into the clearance gap between machine parts under high pressure. By maintaining the position and shape of the primary seal, this component helps preserve the integrity of the hydraulic circuit.

This part is designed for use in the Link-Belt 5800Q lattice crawler crane. It fits into the hydraulic assemblies, including cylinders and valves, to ensure proper seal performance during operation. The component is manufactured to the specific dimensions required for this crane model.

In hydraulic systems, back up rings are used to manage pressure loads on sealing elements. When a system operates under high pressure, the clearance gap between moving parts can cause a softer seal to deform or extrude. The back up ring provides a rigid barrier that keeps the primary seal in place, preventing leakage and maintaining consistent system pressure.