Pentair Diffuser | SuperFlo Pump | 355617Z C9485 The Pentair O-Ring (79128900) is

The Pentair O-Ring (79128900) is the OEM replacement EP40 2-335 O-ring for Pentair pool and spa lights

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It provides the threaded interface between the standard NPT (male pipe thread) connection and the buttress-thread fitting on the filter tank

OEM Brand Product Name Part Number Notes Hayward SwimClear C5025 CX1280XRE 4 cartridges required — full set included Hayward SwimClear C5030 CX1280XRE 4 cartridges required — full set included (This is not an exhaustive list

Pentair Diffuser | SuperFlo Pump | 355617Z C9485 The Pentair O-Ring (79128900) isThe Pentair 355617Z is the OEM replacement diffuser for the SuperFlo pump, covering 1 2 HP Full Rated through 3 4 HP Full Rated and 1 HP Up Rated configurations. What It Does The diffuser channels water from the impeller into the pump volute, converting rotational velocity into pressure. A cracked or worn diffuser reduces hydraulic efficiency and can cause the pump to lose prime or deliver reduced flow. Match the part number stamped on your existing