The Wacker Neuson 29731 O-Ring is a genuine OEM sealing component designed for the PT3 series 75mm/3in centrifugal trash pumps, including the PT3Y, PT3V, PT3A, PTK3, and PT3B models. As a factory-sourced part, the 29731 is manufactured to the exact material composition and dimensional tolerances specified for these pumps, ensuring a proper compression seal at the intended joint. Keeping the correct O-Ring in service protects pump internals from fluid leaks that can lead to loss of prime, pressure drop, and unplanned service interruptions on the jobsite.
Key Features
- Exact Compression Profile: — Molded to OEM dimensional spec, so the 29731 seats and compresses correctly in its groove without over- or under-sealing.
- Genuine Wacker Neuson OEM Part: — Sourced directly through the Wacker Neuson parts program, confirming correct material grade and compatibility for PT3-series pump applications.
- Broad PT3 Series Coverage: — Fits PT3Y, PT3V, PT3A, PTK3, and PT3B 75mm/3in centrifugal trash pump models, making it a dependable stock item for fleets running multiple PT3 configurations.
- Leak-Free Pump Operation: — A correctly seated O-Ring maintains internal fluid paths and prevents bypass leakage that would otherwise degrade pump prime, flow rate, and discharge pressure.
- Fluid System Integrity: — On a trash pump handling abrasive or contaminated water, a compromised O-Ring can allow debris ingestion into sealed cavities; replacing with the correct OEM part restores that barrier.
An O-Ring creates a static or dynamic fluid seal between mating pump components — typically at a housing joint, port fitting, or cover plate. In a centrifugal trash pump like the PT3 series, these seals are critical to maintaining the prime and internal pressure that drives water flow through the discharge line. When an O-Ring hardens, cracks, or is physically damaged, the seal fails, allowing air or fluid to bypass the intended path. The result is loss of prime, reduced discharge performance, or visible external leakage — all of which require the pump to be taken out of service for repair. Replacing a worn O-Ring with the correct OEM part restores the seal geometry and material compliance the pump was designed around.
Part Details
| Part Number | 29731 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 75mm/3in Centrifugal Trash Pum p | PT3Y | 5000007118, 5000007119 |
| 75mm/3in Centrifugal Trash Pum p | PT3V | 5000007171 |
| 75mm/3in Centrifugal Trash Pum p | PT3A | 5000006729, 5000006730 |
| 75mm/3in Centrifugal Trash Pum p Kit (without engin | PTK3 | 5000006747 |
| 75mm/3in Centrifugal Trash Pum p | PT3B | 5000006731 |
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.
