The Wacker Neuson Mechanical Seal is a genuine OEM component designed for the PG1 Dewatering Pump. Sourced directly from Wacker Neuson, this seal meets the exact material grade and compression tolerances specified for the original build — not an approximation. If your pump is showing signs of leakage around the pump shaft, replacing the mechanical seal with the correct OEM part is the surest way to restore a watertight, pressure-stable pump chamber.
Key Features
- OEM-Grade Seal Material — Manufactured to the precise compression rating and chemical resistance required for continuous dewatering pump operation, not a generic seal substitute.
- Drop-In Shaft Fit — Engineered to the exact shaft diameter and seat depth of the PG1 pump housing, so installation follows the standard service procedure without modification.
- Confirmed PG1 Compatibility — Directly fits the Wacker Neuson PG1 Dewatering Pump, giving you confidence you are ordering the right part before it ships.
- Leak-Free Pump Chamber — A healthy mechanical seal maintains the pressure boundary between the pump shaft and the water chamber; a worn seal allows water ingress into the bearing cavity, accelerating shaft and bearing damage.
- Genuine Wacker Neuson Part — Backed by Wacker Neuson's OEM supply chain, part number 5100031994 carries the same quality assurance as the seal installed at the factory.
A mechanical seal is the dynamic sealing element that sits where the rotating pump shaft passes through the pump housing. Its job is to prevent the pumped liquid from escaping along the shaft while still allowing the shaft to spin freely. The seal achieves this through two precision-lapped mating faces — one stationary, one rotating — held together under controlled spring pressure. When the seal faces wear, score, or lose their spring tension, water bypasses the sealing faces and migrates toward the bearings and engine, causing progressive internal damage and eventually pump failure. Replacing a worn mechanical seal promptly is one of the most cost-effective preventive maintenance tasks on any centrifugal dewatering pump.
Part Details
| Part Number | 5100031994 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Mechanical Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Dewatering Pump | PG1 | 5100031509 |
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.
