Pentair Lid O-Ring #2-357 | SuperFlo, SuperMax & OptiFlo Pumps | 357255Z Ladders & Slides Parts The Pentair Cartridge Element (R173216)

The Pentair Cartridge Element (R173216) is the OEM replacement 150 sq

This corrosion-resistant tubing runs between the feeder and your pool's plumbing

Never needs inflation

including Cartridge elements

Pentair Lid O-Ring #2-357 | SuperFlo, SuperMax & OptiFlo Pumps | 357255Z Ladders & Slides Parts The Pentair Cartridge Element (R173216)The Pentair Lid O Ring #2 357 (357255Z) is the OEM replacement strainer lid seal for Pentair SuperFlo, SuperMax, and OptiFlo pump families, including variable speed models. This O ring seats between the strainer pot body and the clear lid, creating the airtight, watertight seal that keeps the pump primed and prevents air from entering the suction side of the system. When this seal degrades through UV exposure, chemical wear, or compression set the