The Wacker Neuson Mechanical Seal is a genuine OEM component designed for the PT2 and PT3 series self-priming centrifugal trash pumps, including the PT2Y, PT2A, PT2B, PT2R, PT3A, PTK2, and PTK3 models. Sourced directly from Wacker Neuson, this seal meets the exact material and dimensional specifications of the original part. It is also compatible with PTK2 and PTK3 pump kit configurations, making it a versatile service part for pump-only assemblies. Confirm your model number against the fitment list before ordering to ensure a correct match.
Key Features
- OEM-Grade Seal Integrity — Manufactured to Wacker Neuson's original face-contact and elastomer specifications, ensuring consistent shaft sealing under the pressure and flow demands of trash pump operation.
- Drop-In Shaft Replacement — Engineered to seat correctly on the pump impeller shaft without modification, maintaining the precise face-contact alignment required for a leak-free seal.
- Broad PT2 and PT3 Fitment — Covers the PT2Y, PT2A, PT2B, PT2R, and PT3A pump models, as well as the PTK2 and PTK3 pump kit variants across both 50mm/2-inch and 75mm/3-inch discharge configurations.
- Prevents Pump Shaft Damage — A worn or failed mechanical seal allows water and abrasive slurry to migrate along the shaft, accelerating bearing wear and leading to costly pump failure. Replacing the seal promptly protects the entire pump assembly.
- Genuine Wacker Neuson Part — Part number 5000051756 is an authorized OEM replacement, so you can be confident it matches the original specification your pump was built around.
The mechanical seal in a centrifugal trash pump sits between the rotating impeller shaft and the pump housing, creating a dynamic, water-tight barrier that prevents fluid from leaking out along the shaft while the pump is running. It works by pressing two precision-lapped faces — one stationary and one rotating — together under spring tension, forming a seal that holds even as the shaft spins at high speed. When the mechanical seal wears out or the sealing faces become damaged, the pump will begin to leak at the shaft, lose prime, and can quickly cause secondary damage to the bearings and motor behind it — making timely replacement one of the most cost-effective maintenance tasks on any trash pump.
Part Details
| Part Number | 5000051756 |
|---|---|
| Old Part Number | 0051756 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Mechanical Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 50mm/2in Centrifugal Trash Pum p | PT2Y | 5000007117 |
| 50mm/2in Centrifugal Trash Pum p | PT2A | 5000006720, 5000006721 |
| 50mm/2in Centrifugal Trash Pum p | PT2B | 5000006722 |
| 75mm/3in Centrifugal Trash Pum p | PT3A | 5000006730 |
| 50mm/2in Centrifugal Trash Pum p | PT2R | 5000007160, 5000006790 |
| 75mm/3in Centrifugal Trash Pum p Kit (without engin | PTK3 | 5000006747 |
| 50mm/2in Centrifugal Trash Pum p (without engine) | PTK2 | 5000006767 |
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.
