The Wacker Neuson 5200021714 Lip Seal is a genuine OEM component designed for the APT4T and APT4S series submersible pumps, including Surge Brake, Electric Brake, and Cold Weather configurations. As a direct OEM replacement, this seal is manufactured to the same specifications as the original, ensuring a proper fit within the pump's shaft and housing assembly. It is confirmed compatible across the APT4T Pump with Surge Brake, APT4T Pump with Electric Brake, APT4S Pump with Skid, and their respective Cold Weather variants. Keeping this seal in good condition is essential to maintaining the integrity of the pump's internal components and preventing fluid ingress or bypass.
Key Features
- Genuine OEM Sealing Material — Manufactured to Wacker Neuson's original compound and dimensional specifications, ensuring the correct compression profile and seal lip contact for the APT4 pump shaft.
- Direct-Fit Replacement — Engineered to seat into the existing pump housing without modification, aligning precisely with the shaft diameter and bore of the APT4T and APT4S pump assemblies.
- Broad APT4 Series Coverage — Compatible with APT4T and APT4S variants including Surge Brake, Electric Brake, standard, and Cold Weather configurations — one part number covers the full range.
- Prevents Fluid Bypass and Contamination — A correctly seated lip seal keeps pumped media from migrating into the bearing and mechanical seal area, protecting internal components from premature wear.
- Critical for Cold Weather Configurations — Cold Weather APT4 units operate under additional thermal stress; replacing a worn or cracked lip seal promptly maintains pump integrity across temperature extremes.
A lip seal creates a dynamic barrier between rotating and stationary pump components — typically around the drive shaft — preventing water, slurry, or debris from entering the pump's internal cavity. In submersible pump applications like the APT4T and APT4S, this seal bears constant exposure to the pumped media and must maintain consistent contact pressure against the shaft to function correctly. When the lip seal wears, cracks, or hardens over time, fluid can bypass the sealing surface and reach bearings or other internal components, leading to accelerated wear and eventual pump failure.
Part Details
| Part Number | 5200021714 |
|---|---|
| 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.
