Back-up ring for Terex machinery

The back-up ring, part number 1045Z1222, functions as a mechanical support component within the sealing systems of Terex machinery. It is positioned behind primary dynamic seals, such as O-rings or piston seals, to prevent the seal material from extruding into the clearance gaps between moving parts when subjected to high hydraulic pressure. By providing this structural support, the component helps maintain the shape and position of the primary seal, ensuring the integrity of the hydraulic circuit.

This component is compatible with a range of Terex equipment, including cranes and heavy machinery that utilize hydraulic cylinders, valves, and pumps. It is designed to operate within systems where fluid pressures are significant. Proper installation of this ring is necessary to prevent premature seal failure, internal fluid leakage, and subsequent system contamination or loss of pressure.

In hydraulic applications, back-up rings are used to bridge the gap between mating surfaces, allowing the primary seal to function effectively without deforming under load. This prevents the seal from being forced into the clearance space, which is a common cause of failure in high-pressure hydraulic environments. Maintaining these components ensures that the hydraulic system operates at its intended efficiency.