The Wacker Neuson is a genuine OEM Retaining Ring designed for the PDT2A, PDT2, PDI2A(I), PDT3A, PDI3A, and PDI3A(I) diaphragm pump series. As a factory-authorized component, it meets the original design tolerances required to hold internal pump assemblies securely in position during operation. This part covers a broad range of 2-inch and 3-inch diaphragm pump models, making it a practical stock item for contractors and rental fleets running Wacker Neuson pumping equipment. Confirm your model number against the fitment list before ordering to ensure correct application.
Key Features
- Genuine OEM Snap Fit Tolerance — Manufactured to the original dimensional specification, ensuring the ring seats and releases correctly in its groove without distortion or play.
- Direct-Fit Replacement — Installs in the same retaining groove as the original, requiring no reshaping, grinding, or adaptation to the housing.
- Broad Diaphragm Pump Compatibility — Confirmed fitment across the PDT2A, PDT2, PDI2A(I), PDT3A, PDI3A, and PDI3A(I) pump families, covering both 2-inch and 3-inch discharge configurations.
- Keeps Internal Components Properly Seated — A worn or missing retaining ring allows shafts, bearings, or diaphragm assemblies to shift axially, leading to accelerated wear and pump inefficiency.
- Prevents Unplanned Disassembly Risk — In fluid-handling equipment, a failed retaining ring can result in loss of prime, seal damage, or uncontrolled component separation — making timely replacement a functional safety measure.
A retaining ring is a small but load-bearing fastening component used to lock rotating or sliding parts — such as shafts, bearings, or pump diaphragm assemblies — into a fixed axial position within a housing bore or on a shaft. In a diaphragm pump, it prevents internal components from migrating out of alignment under the cyclic pressure and vibration generated during pumping cycles. When a retaining ring cracks, deforms, or is lost during service, the components it secures can shift or separate, causing accelerated wear on adjacent parts, loss of pumping efficiency, and potential pump failure if left unaddressed.
Part Details
| Part Number | 5000180231 |
|---|---|
| Old Part Number | 0180231 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Retaining Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT2A | PDT2A | 5000620769, 5100075510 |
| PDT2 Pump, Diaphragm | PDT2 | 5000620770 |
| PDI2A(I) | PDI2A(I) | 5000620772, 5100075511 |
| PDT3A | PDT3A | 5100075507 |
| PDI3A | PDI3A | 5100075508 |
| PDI3A(I) PUMP DIAPHRAGM | PDI3A(I) | 5100075509 |
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.
