BACK UP RING

In Stock

The BACK UP KIT 469 417 6 provides essential support for primary seals in high-pressure hydraulic components. It prevents seal extrusion and failure, ensuring consistent performance and preventing fluid leaks from critical systems like the drifter, cylinders, or hydraulic valves on your rig.

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Description

Full Technical Description

The 046 941 76 BACK UP RING (4694176, 469-417-6, BACK UP RING 4694176) is a mining-duty back-up ring engineered for Sandvik drilling rigs, ROC machinery, and underground jumbos. The 046 941 76 BACK UP RING provides structural reinforcement to primary hydraulic seals, preventing extrusion and deformation under extreme pressure, heat, and vibration during drilling operations.

This 046 941 76 BACK UP RING is manufactured from high-strength, extrusion-resistant polymer or elastomer composite materials designed to withstand abrasive dust, hydraulic-oil exposure, and continuous pressure cycling. OEM references 4694176 and 469-417-6 ensure full compatibility with Sandvik sealing systems.

Function & Operation

The 046 941 76 BACK UP RING works together with O-rings and hydraulic seals to maintain internal pressure integrity inside actuators, drifter assemblies, feed cylinders, and rotating mechanisms. By preventing seal extrusion and hydraulic leakage, it significantly extends seal life and supports stable drilling performance in mining and tunneling environments.

Reliability & Maintenance

Inspect the 046 941 76 BACK UP RING for deformation, flattening, extrusion marks, or wear. Replace 469 417 6 immediately if pressure consistency decreases or if hydraulic leakage occurs.