Back-up ring for Grove TMS-760

The back-up ring 9926100716 functions as an auxiliary component within the hydraulic sealing systems of heavy machinery. It is installed alongside primary seals, such as O-rings, to prevent them from extruding into the clearance gap between mating surfaces when the system is subjected to high hydraulic pressures. By providing this mechanical support, the ring ensures the primary seal maintains its intended shape and position, which helps prevent fluid leakage and maintains the overall integrity of the hydraulic circuit.

This component is specifically compatible with the Grove TMS-760 truck crane, including units within the 71417 serial number range. It is intended for use in high-pressure hydraulic cylinders or valve assemblies where sealing performance is critical for the crane's lifting and operational functions.

In hydraulic engineering, back-up rings are used to bridge the gap between two surfaces that move relative to one another under pressure. Because they are typically manufactured from harder materials than the elastomeric seals they support, they act as a physical barrier that resists the deformation of the softer seal material. Proper installation of these rings is a standard maintenance procedure to ensure that hydraulic seals operate within their design parameters.