Wacker Neuson 5000080730 O-Ring .351 X .072 Duro90 3-904

The Wacker Neuson is a genuine OEM O-Ring.351 X.072 Duro90 3-904 designed for a wide range of Wacker Neuson RD-series tandem rollers, RT-series vibratory trench rollers, and CRT-series ride-on concrete trowels. This seal is sourced directly through Wacker Neuson's authorized parts program, ensuring it matches the original dimensional and material specifications used in production. Compatible models include the RD7, RD12, RD12A, RD16, RT560, RT820, CRT48, and CRT60 series, making one of the more broadly applied seals in the Wacker Neuson hydraulic and fluid-system parts catalog. When it's time to service your machine, using the correct OEM seal eliminates the guesswork on sizing and durometer rating.

Key Features

• Duro90 Compound Integrity — 90-durometer elastomer provides the firm compression resistance required to maintain a positive hydraulic or fluid seal under sustained operating pressure.
• Exact Dimensional Match — .351 in. inner diameter × .072 in. cross-section matches the original groove specification, seating correctly without shimming or resizing.
• Broad Model Coverage — A single part number spans RD7, RD12, RD12A, and RD16 tandem rollers, RT560 and RT820 trench rollers, and CRT48 and CRT60 ride-on trowels.
• Leak Prevention at the Source — A correctly seated O-ring of the right durometer stops fluid migration at connection points; a hardened or undersized seal leads to seeping joints and pressure loss that degrades hydraulic response.
• Genuine OEM Part — Supplied as an authorized Wacker Neuson replacement, verified against the original bill of materials for the listed machine series.

An O-ring is a circular elastomeric seal that sits in a machined groove between two mating surfaces — such as a hydraulic fitting, valve body, or pump housing — and prevents fluid from escaping past the joint. The durometer rating (90 in this case) describes the rubber's hardness: a higher rating means the material resists compression and extrusion under higher pressures, which is why the correct rating matters as much as the correct size. When an O-ring ages, hardens, or sustains damage, the seal breaks down and allows hydraulic fluid or other fluids to leak, causing pressure drops, contamination, and accelerated wear on surrounding components. Replacing a worn O-ring with part number 5000080730 restores the original sealing performance and protects the integrity of the hydraulic circuit it serves.

Part Details

Compatibility & Fitment

Verify Before You Order

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

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.