The Wacker Neuson Seal is a genuine OEM seal designed for the APT8S and APT8T pump series, including surge brake, electric brake, and cold weather configurations. As a factory-sourced component, it is manufactured to the same material and dimensional standards as the original part, ensuring a correct fit within the pump assembly. This seal is confirmed for use across the full APT8S and APT8T model range, covering both standard and cold weather variants. Keeping the correct seal in place is essential to maintaining pump integrity and preventing fluid loss during operation.
Key Features
- OEM-Grade Sealing Material — Sourced directly from Wacker Neuson, this seal meets the original compression and material specifications required to maintain a leak-free pump assembly.
- Drop-In Fitment — Engineered to match the original seal profile exactly, allowing straightforward installation without modification to mating surfaces or housings.
- Broad APT8 Series Coverage — Fits APT8S and APT8T pumps across surge brake, electric brake, and cold weather variants, covering a wide range of trailer-mounted pump configurations.
- Preserves Pump Performance — A worn or degraded seal can allow fluid to bypass or escape the pump housing, leading to loss of prime, reduced output pressure, and potential contamination. This OEM replacement restores proper sealing function.
- Cold Weather Variant Compatible — Confirmed fitment on cold weather APT8S CW and APT8T CW models, making this a dependable choice for operations in low-temperature environments.
A seal in a trailer-mounted water pump serves as a barrier between moving and stationary components, preventing fluid from escaping the pump housing and keeping internal pressure where it belongs. When a seal wears out or fails, the pump may lose prime, deliver inconsistent flow, or allow water to leak around the shaft or housing joints. Replacing a degraded seal promptly with the correct OEM part restores pump efficiency and prevents secondary damage to surrounding components.
Part Details
| Part Number | 5200021711 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT8S Pump w/Skid | APT8S | 5200018987 |
| APT8T Pump, Surge Brake | APT8T | 5200019648, 5200019649 |
| APT8T Pump, Surge Brake, Cold Weather | APT8T CW | 5200019796, 5200019797 |
| APT8S Pump w/Skid, Cold Weather | APT8S CW | 5200019800 |
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.
