The Wacker Neuson O-Ring 46 X 3 80 Sh is a genuine OEM seal designed for the IREN 57 and PIR 55 series internal vibrators. Sourced directly from Wacker Neuson, this O-Ring 46 X 3 80 Sh meets the exact material and dimensional specifications required for these machines. It is confirmed compatible across multiple IREN 57 ST variants as well as PIR 55 pneumatic internal vibrators, making it the correct choice when your machine calls for part.
Key Features
- OEM-Grade Elastomer Compound — Manufactured to Wacker Neuson's material specification for this seal profile, ensuring the correct durometer hardness (80 Sh) and compression resistance for sustained sealing performance in concrete vibrator applications.
- Exact Dimensional Match — The 46 x 3 mm cross-section seats directly into the designed groove without trimming or adaptation, maintaining the intended sealing geometry on reassembly.
- Broad IREN 57 and PIR 55 Coverage — Fits IREN 57 ST1, ST2, ST3, and ST4 variants as well as PIR 55 pneumatic internal vibrators, consolidating one part number across the most common Wacker Neuson internal vibrator configurations.
- Leak-Free Internal Sealing — A correctly fitted O-ring keeps lubricant contained and contaminants out of the vibrator housing; a worn or hardened seal leads to lubricant loss, heat buildup, and premature internal wear.
- Straightforward Service Part — Stocked as a discrete replacement item so technicians can address seal wear during routine maintenance without replacing a larger assembly.
An O-ring is a circular elastomeric seal that sits in a machined groove between two mating surfaces or components, creating a pressure-tight barrier against fluid or contaminant ingress. In an internal concrete vibrator like the IREN 57 or PIR 55, O-rings play a critical role in keeping the lubricating oil inside the vibrator head while preventing cement slurry and moisture from entering the housing. When an O-ring hardens, cracks, or takes a permanent set over time, it loses its ability to conform to the mating surface and the seal fails — allowing lubricant to escape and abrasive material to enter, which accelerates wear on internal components and can lead to complete vibrator failure if not addressed promptly.
Part Details
| Part Number | 5002006781 |
|---|---|
| Old Part Number | 2006781 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring 46 X 3 80 Sh |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| IREN 57 ST1 | IREN 57 ST1 | 5000008903 |
| Internal Vibrator IREN 57 ST | IREN 57 ST3 | 5000008430 |
| Internal Vib. IREN 57 ST2 | IREN 57 ST 2 | 5000008904 |
| Internal Vib. IREN 57 ST4 | IREN 57 ST4 | 5000008905 |
| Ø 55 mm, PneumaticInternal Vib rator | PIR 55 | 5000006417, 5000006418 |
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.
Wacker Neuson