Product Overview

The Pentair R172009Z Cap O-Ring is a genuine Pentair replacement Viton O-ring for the 3-inch lid of Pentair Rainbow automatic chemical feeders. It seals the feeder lid so the feeder holds pressure without leaking.

Pentair R172009Z Replacement O-Ring for Rainbow Automatic Chemical Feeder Lid

Ideal For

Rainbow feeder lids that leak or no longer seal

Replacing a flattened, cracked or stretched lid O-ring

Routine feeder maintenance by pool owners and technicians

Key Features

Genuine Pentair part: part number R172009Z.

Viton material: for chlorine and bromine resistance.

-343 size O-ring: for the Rainbow 3-inch feeder cap.

Specifications

Warranty & Compatibility

Compatibility Notes

This O-ring fits the 3-inch lid of Pentair Rainbow automatic chemical feeders. Confirm your feeder model before ordering.

Installation Notes

Turn off the pump and relieve pressure before opening the feeder. Remove the old O-ring, clean the groove and lid sealing surface, and seat the new O-ring evenly. Use only a lubricant approved for Viton and chlorine contact if one is required.

Customer-Facing Q&A

Q: What is the part number?
A: The Pentair part number is R172009Z.

Q: What is the UPC?
A: The UPC is 788379884994.

Q: What is it made of?
A: Viton.

Q: What does it fit?
A: The 3-inch lid of Pentair Rainbow automatic chemical feeders.