AR2840890 Buna O-Ring 14mm Inlet/Outlet RMW Pump - 1791
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The AR2840890 is a replacement O-ring for the inlet and outlet ports of AR North America (Annovi Reverberi) RMW Series pressure washer pumps. It creates a tight seal where the water supply and discharge connect to the pump manifold, preventing leaks and keeping pressure consistent. Over time, heat, pressure cycling, and chemical exposure can harden, crack, or flatten O-rings, which often shows up as drips or seepage at the inlet or outlet fittings. Replacing a worn O-ring is a quick, low-cost fix that restores a leak-free connection and protects the pump from running with an air leak on the inlet side. As a genuine OEM part, it matches the original’s fit and material.
Key features:
- Fits inlet and outlet ports on AR RMW Series pumps
- Restores a leak-free seal at the pump connections
- Genuine OEM AR North America part for an exact fit