BACK UP RING

In Stock

The BACK UP KIT 888 086 09 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 888 086 09 BACK UP RING (88808609, 888-086-09, BACK UP RING 88808609) is a mining-duty back-up ring engineered for Sandvik drilling rigs, ROC machinery, and underground jumbos. The 888 086 09 BACK UP RING provides structural reinforcement to primary hydraulic seals, preventing extrusion and deformation under extreme pressure, heat, and vibration during drilling operations.

This 888 086 09 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 88808609 and 888-086-09 ensure full compatibility with Sandvik sealing systems.

Function & Operation

The 888 086 09 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 888 086 09 BACK UP RING for deformation, flattening, extrusion marks, or wear. Replace 888 086 09 immediately if pressure consistency decreases or if hydraulic leakage occurs.