Back-up ring for Lorain 445

The back-up ring is an auxiliary component used within the hydraulic systems of the Lorain 445 crane. Its primary function is to provide mechanical support to primary seals, such as O-rings, by preventing them from extruding into the clearance gap between sealing surfaces when the system is subjected to high hydraulic pressure. By maintaining the position and shape of the primary seal, this component helps preserve the integrity of the hydraulic circuit.

This specific part is designed for use in the Lorain 445 crane. It is intended for integration into hydraulic cylinders, valves, or pumps where operating pressures require additional reinforcement to protect the sealing elements from deformation. Proper installation of this ring ensures that the seal remains within its designated groove, preventing fluid leakage and maintaining system efficiency during operation.

In hydraulic assemblies, back-up rings are positioned adjacent to the primary seal. They are engineered to provide uniform support around the entire circumference of the seal, effectively bridging the gap that would otherwise allow the softer sealing material to be forced out under pressure. This support is necessary for the long-term reliability of hydraulic components operating under load.