The Wacker Neuson Mechanical Seal is a genuine OEM component designed for the PG3A and PG3 Dewatering Pump series. As a direct OEM replacement sourced from Wacker Neuson, this seal is manufactured to the exact tolerances required to maintain a leak-free barrier between the pump's rotating shaft and wet end — no guesswork, no improvised substitutes. Confirmed fitment spans multiple PG3A and PG3 configurations, including the 75mm/3in Dewatering Pump variants. When your pump is moving water day in and day out, keeping the right seal in place protects everything downstream.
Key Features
- OEM-Matched Sealing Surfaces — Manufactured to Wacker Neuson's exact face material and compression specifications, ensuring a proper wet-end seal on every install.
- Drop-In Shaft Compatibility — Engineered to seat directly onto the PG3A and PG3 pump shaft without modification, maintaining correct axial alignment from the start.
- Broad PG3 Series Coverage — Fits multiple PG3A and PG3 Dewatering Pump configurations, including the 75mm/3in variants, making it a go-to seal for mixed PG3 fleets.
- Leak Prevention Under Load — A correctly seated mechanical seal keeps water out of the bearing housing and motor cavity; a worn or failed seal allows water ingress that can destroy bearings and contaminate lubricants.
- Fluid-Contact Grade Construction — Built to withstand continuous submersion and contact with the pumped media, resisting wear from abrasive particles common in dewatering applications.
A mechanical seal is the critical interface between a pump's rotating shaft and its stationary housing, creating a pressurized face-to-face barrier that prevents pumped fluid from migrating along the shaft into the bearing and motor assembly. In dewatering pumps like the PG3A and PG3, this seal operates under continuous hydraulic load and is exposed to grit, sediment, and debris carried in the water stream. When the seal faces wear, chip, or lose compression, water bypasses the barrier — leading to bearing failure, housing corrosion, and ultimately pump seizure. Replacing a worn mechanical seal at the first sign of leakage is one of the most cost-effective ways to extend the service life of a dewatering pump.
Part Details
| Part Number | 5000070004 |
|---|---|
| Old Part Number | 0070004 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Mechanical Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PG3A | PG3A | 5000007659, 5000009055 |
| PG3 Dewatering Pump | PG3 | 5000009498, 5000009499 |
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.
