The Wacker Neuson 5200021706 is a genuine OEM Lip Seal designed for the APT4T and APT4S submersible pump series, including Cold Weather and Surge Brake configurations. Sourced directly from Wacker Neuson, this seal is manufactured to the exact material and dimensional standards of the original component. It fits the APT4T Pump with Surge Brake, APT4T Pump with Electric Brake, APT4S Pump with Skid, and their Cold Weather variants. If your pump is showing signs of fluid leakage or seal deterioration, the 5200021706 Lip Seal is the correct OEM replacement to restore proper operation.
Key Features
- OEM Material Integrity — Manufactured to Wacker Neuson's original compound and durometer specification, ensuring the seal compresses and seats correctly against the shaft surface.
- Drop-In Replacement — Matches the original seal profile and bore dimensions for straightforward installation without modification to the pump housing.
- Broad APT4 Series Coverage — Compatible with APT4T and APT4S configurations, including Surge Brake, Electric Brake, Cold Weather, and Skid-mounted variants.
- Protects Pump Internals — A properly seated lip seal prevents water and debris ingress past the rotating shaft, safeguarding bearings and internal components from premature wear.
- Fluid Containment Compliance — Maintaining an intact lip seal prevents uncontrolled fluid weeping from the pump shaft — critical in submersible and wet-environment pump applications where leakage poses an electrical hazard.
A lip seal is a dynamic sealing component that wraps tightly around a rotating shaft to prevent fluid from migrating past the shaft exit point in the pump housing. In submersible pump applications like the APT4T and APT4S, the lip seal acts as the primary barrier between the pumped liquid and the pump's internal mechanical components. When the seal wears, hardens, or tears, fluid can bypass the shaft and reach bearings or motor windings, leading to accelerated mechanical failure and potential electrical damage.
Part Details
| Part Number | 5200021706 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lip Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT4T Pump, Electric Brake, Cold Weather | APT4T CW | 5200019793, 5200019792 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
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.
