[Lifetime Warranty] R172009 Cap O-Ring for Automatic Chlorine/Bromine Pool/Spa Filter - Compatible with Pentair Rainbow Automatic Chlorine/Bromine Pool and spa Feeder 300 302 300-29X 320 322 - Pack of 2

R172009 Cap O-Ring for Automatic Chlorine/Bromine Pool/Spa Filter - Pack of 2

Key Features

• Includes two replacement cap o-rings
• Creates a secure seal for the chlorinator feeder lid
• Constructed from durable, high-grade rubber
• Approximate Dimensions: 4.125-inch (4-1/8") Inner Diameter

Replaces / Cross-Reference Part Numbers

• R172009
• O-283

Compatibility & Fitment

• Fits Pentair Rainbow Automatic Chlorine/Bromine Feeders
• Compatible Models: 300, 302, 300-19, 300-29, 300-29X, 320, 322

When to Replace

• If the existing o-ring is cracked, brittle, flattened, or stretched
• When a water leak is visible around the feeder lid
• During routine seasonal maintenance to prevent future leaks

Installation Tips

• Shut off the pump and release system pressure before opening the feeder lid
• Clean the lid groove and sealing surface of any debris
• Apply a compatible silicone-based lubricant to the new o-ring before installation
• Ensure the o-ring is seated evenly in the groove without twists or pinches
• Hand-tighten the lid until secure; do not over-tighten