Description
Overview:
This genuine Nilfisk seal (OEM No. 107142589) is a small but critical component used to keep your pressure washer watertight and performing as intended. Made from a durable elastomer in a compact ring form, it provides a reliable barrier within the pump assembly to prevent leaks and preserve working pressure. Designed specifically for Nilfisk cold-water pressure washers, it is a direct-fit replacement for popular models such as MC 3C and MC 4M. The seal's precise dimensions - outer diameter 21.2 mm and inner diameter 16.7 mm - support correct seating and long service life when used under typical pressure washer operating conditions. Fitting a fresh seal restores pressure stability, helps protect internal parts, and supports consistent cleaning performance.
Key Features:
- Genuine Nilfisk part for assured compatibility and performance (OEM 107142589)
- Accurate sizing: 21.2 mm outer diameter and 16.7 mm inner diameter for a secure fit
- Robust elastomer construction suited to water and common cleaning agents used in pressure washing
- Maintains pump pressure and helps prevent water ingress or egress at critical interfaces
- Helps reduce downtime by addressing pressure loss and leakage promptly
- Direct replacement design to simplify routine servicing and renewal
- Supports longer pump lifespan by protecting adjacent components from wear
- Suitable for a wide range of Nilfisk MC 3C and MC 4M series variants listed below
Typical Applications:
Used during routine servicing or pump refurbishment of Nilfisk pressure washers to cure leaks, restore operating pressure, and stabilise performance. Ideal when there is visible water seepage, foaming at joints, loss of pressure, or after dismantling the pump head for inspection, cleaning, or packing replacement.
Also known as:
Pressure washer pump seal, sealing ring, pump water seal, packing seal, high-pressure seal ring, Nilfisk pump seal, replacement seal ring for pressure washer pumps.
Fits Models:
4M-140/620, 4M-160/720, 4M140620, 4M160720, MC 3C, MC 3C-140/570, MC 3C-150/570 XT, MC 4M, MC 4M-100/770, MC 4M-140/620, MC 4M-140/620 XT, MC3C, MC4M, MH3C-90/670PAX230/1/50, MH3M-100/600PA230/1/50
Alternate Part Numbers:
107142589, NIL107142589
Product Specifications
| L&S Part No. | NIL107142589 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Nilfisk |
| OEM No. | 107142589 |
| Unit of Sale | 1 |
| Machine Type | Pressure Washers |
| Fits Brands | Nilfisk |
| Key Features | - Genuine Nilfisk part ensures compatibility (OEM 107142589) - Outer diameter 21.2 mm, inner diameter 16.7 mm - Durable elastomer construction for water and cleaning agents - Direct replacement for Nilfisk MC 3C and MC 4M models - Maintains pump pressure, preventing leaks and pressure loss |
| Fits Models | MC 3C-140/570 | MC 3C-150/570 XT | MC 4M - 100/770 | MC 4M - 140/620 | MC 4M - 140/620 XT | MH 3C-90/670 PAX 230/1/50 | MH 3M-100/600 PA 230/1/50 | SC UNO 4M-140/620 PS 230/1/50 | SC UNO 4M-160/720 PS 400/3/50 |
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