The Wacker Neuson Mechanical Seal is a genuine OEM component designed for PSC43703 and PSC43803EX series submersible pumps. As a factory-sourced part, the is manufactured to the same specification as the original seal installed at the factory, ensuring a correct fit within the pump housing without modification. This mechanical seal is a critical wear item in submersible pump service and should be replaced at the first sign of leakage or performance loss to protect the pump motor and internal components from water ingress.
Key Features
- OEM Sealing Integrity — Manufactured to Wacker Neuson's original material and compression specifications, ensuring the sealing faces mate correctly under submersible operating conditions.
- Drop-In Installation — Engineered to the exact dimensions of the original seal seat, allowing the 5000176930 to seat and align within the pump housing the same way the factory part does.
- Confirmed Fitment — Verified for PSC43703 and PSC43803EX submersible pumps, covering both standard and EX-rated variants in the PSC series.
- Protects the Pump Motor — A properly functioning mechanical seal keeps water out of the motor cavity; a worn or failed seal allows fluid bypass that can lead to motor winding damage and pump failure.
- Genuine Wacker Neuson Part — Sourced directly through the Wacker Neuson OEM supply chain, so the part number, materials, and geometry match the original exactly.
A mechanical seal forms the dynamic barrier between the rotating pump shaft and the surrounding fluid, preventing water from migrating along the shaft into the motor housing. It consists of two precision-lapped sealing faces — one stationary, one rotating — that maintain contact under spring pressure to create a leak-free interface. When the seal faces wear, chip, or lose tension, the barrier breaks down, allowing water to bypass into the motor cavity, which can cause electrical faults, bearing corrosion, and ultimately full pump failure. Replacing the mechanical seal at the correct service interval is one of the most effective ways to extend the working life of a submersible pump.
Part Details
| Part Number | 5000176930 |
|---|---|
| Old Part Number | 0176930 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Mechanical Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 3~Submersible Pumps | PSC43703 | 5000620470 |
| 3~Submersible Pumps | PSC43803EX | 5000620473 |
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.
