The Wacker Neuson Mechanical Seal is a genuine OEM component designed for the PS2-3703, PS3-3703, PS4-3703, PS3-5503, and PS4-5503 series submersible pumps. Sourced directly from Wacker Neuson, this mechanical seal carries the exact material grade and dimensional tolerancing specified for these pumps at the production level. It covers a wide range of voltage configurations across the PS3 and PS4 series, including 220V, 440V, and 400V variants, making it the correct service part regardless of your pump's electrical specification. When it comes time to replace the seal on your submersible pump, part number is the authoritative fitment choice.
Key Features
- OEM-Grade Seal Material — Manufactured to the compression rating and material specification Wacker Neuson requires for sustained submersible pump operation, not a generic substitute.
- Direct Drop-In Replacement — Engineered to seat exactly as the original, with mating faces and shaft dimensions matched to PS-series pump housings for a clean, leak-free installation.
- Broad PS-Series Compatibility — Fits the full PS2-3703, PS3-3703, PS4-3703, PS3-5503, and PS4-5503 model families across multiple voltage configurations (220V, 440V, and 400V/50Hz).
- Prevents Costly Water Ingress — A sound mechanical seal keeps water out of the motor cavity; a worn or failed seal allows fluid intrusion that can destroy the motor windings and bearings.
- Critical Submersible Safety Barrier — In a fully submerged pump, the mechanical seal is the primary defense against electrical faults caused by water reaching live motor components — using the correct OEM-spec part matters here.
A mechanical seal sits at the interface between the pump's wet end and its motor, creating a dynamic, pressure-resistant barrier that rotates with the shaft while maintaining a fluid-tight closure. In a submersible pump, this seal does its job while fully immersed, so the quality and dimensional accuracy of the sealing faces are critical to keeping the motor dry and running. When a mechanical seal wears, chips, or loses face pressure, water migrates into the motor housing — leading to winding failure, bearing corrosion, and pump shutdown.
Part Details
| Part Number | 5100028490 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Mechanical Seal |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PS2-3703 | PS23703 | 5000008826 |
| PS3-3703 | PS33703 | 5000008832, 5000008833, 5000009135, 5000009136 |
| PS4-3703 | PS43703 | 5000008839, 5000008838 |
| PS3-5503 | PS35503 | 5000008844, 5000008845, 5000009141, 5000009142, 5000009200 |
| PS4-5503 | PS45503 | 5000008850, 5000008851, 5000009144, 5000009145, 5000009202 |
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.
