Wacker Neuson 5000080732 O-Ring .644 X .087 Duro90 3-908

The Wacker Neuson is a genuine OEM O-Ring.644 X.087 Duro90 3-908 designed for a wide range of RD tandem rollers, RT and RTL trench rollers, and WB power buggies. Sourced directly from Wacker Neuson, this part matches the original specification for material durometer and dimensional tolerances. Compatible models include the RD7, RD11, RD12, RD16, RT56, RT82, RT560, RT820, RTLx-SC3, RTKx-SC3, RTx-SC2 series, and select WB16 power buggies. Using the correct OEM replacement ensures the hydraulic or fluid circuit retains its original sealing integrity without rework.

Key Features

• Duro90 Compound Sealing — The 90-durometer elastomer compound provides firm, high-pressure sealing performance suited to the hydraulic systems found in compaction rollers and trench rollers.
• Exact Dimensional Match — At .644 in. inner diameter and .087 in. cross-section, this O-ring seats correctly in the original groove without shimming, trimming, or gland modification.
• Genuine OEM Part — Manufactured to Wacker Neuson's original material and hardness specification, so the seal performs as it did from the factory — no guesswork on compound compatibility.
• Broad Model Coverage — A single part number covers RD7, RD11, RD12, RD16, RT56-SC / RT82-SC, RT560, RT820, RTLx-SC3, RTKx-SC3, RTx-SC2 series machines, and WB16 power buggies — simplifying stock management for mixed fleets.
• Hydraulic Integrity Protection — A failed or degraded O-ring in a hydraulic circuit causes fluid leaks, pressure loss, and potential drive or vibration system faults; replacing with the correct part restores full system pressure and prevents secondary component damage.
• Fluid and Pressure Compatibility — The Duro90 rating is suited to hydraulic fluid exposure at elevated pressures and temperatures typical of continuous compaction roller operation.

An O-ring is a precision sealing element installed at fluid connections, valve bodies, and hydraulic fittings to prevent leaks between mating surfaces. In compaction rollers and trench rollers, O-rings are used throughout the hydraulic drive and vibration circuits, where they must maintain a consistent seal under sustained pressure and temperature cycling. When an O-ring deteriorates — due to compression set, cracking, or swelling from fluid incompatibility — the resulting leak reduces system pressure, contaminates surrounding components, and can lead to erratic or failed drive performance. Replacing a worn O-ring promptly with the correct dimensional and material specification is one of the most cost-effective ways to protect the broader hydraulic system.

Part Details

Compatibility & Fitment

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Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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