BACKING RING

770 076 34 BACKING RING In any high-pressure hydraulic system, like the percussion or rotation circuits of a drifter, seals are subjected to immense force. This component works in tandem with a primary seal, providing mechanical support and preventing it from being extruded into the clearance gap between metal parts. Its presence is essential for maintaining the integrity of the hydraulic seal, allowing the system to hold pressure effectively.

A worn or damaged BACKING RING directly compromises the main seal it supports. This leads to internal hydraulic leaks, which cause a noticeable loss of impact energy or rotation torque at the drill bit. If the seal fails completely, it can result in external oil leaks and unplanned downtime for repairs. Proper sealing is fundamental for the drifter to deliver the power required for efficient drilling.

When servicing hydraulic components or replacing seals, this part should always be replaced as a set with the primary seal. Never reuse an old BACKING RING. Ensure the groove is clean and inspect for any sharp edges before installing the new parts to avoid immediate damage and guarantee a long-lasting repair.