Pentair R172009 Cap O-Ring Replacement Pool and Spa Filter and Feeder
Pentair R172009 Cap O-Ring for Pool and Spa Filters and Feeders
Genuine Pentair replacement o-ring for cartridge filter caps and Rainbow automatic feeder lids. Ensures leak-free operation across multiple Pentair pool and spa systems.
Engineered for Pentair Systems
OEM Seal Quality
Genuine Pentair o-ring engineered to factory specifications for consistent compression and long-term elasticity in pool and spa environments.
Leak Prevention
Precision-molded to seal filter caps and feeder lids against water loss and air intrusion under pressure.
Chemical Resistant
Formulated to withstand chlorine and bromine exposure in automatic feeder applications without degrading or cracking.
Dual Application
Works across both Pentair cartridge filter modules and Rainbow feeder systems, reducing inventory needs for service technicians.
Fits Pentair Filters and Feeders
The R172009 o-ring is designed for use with Pentair standard and high square footage module cartridge filters. Also compatible with Pentair Rainbow automatic chlorine and bromine feeders including Model 300, Model 302, Model 300-19, Model 300-29, Model 300-29X, Model 320, and Model 322. Fits Rainbow feeder extensions as well.
Replacement Schedule
Routine Replacement
Replace o-ring annually or when you notice reduced elasticity, flattening, or visible cracking to maintain seal integrity.
During Cartridge Changes
Inspect o-ring whenever servicing cartridge filters. Clean groove and lubricate with silicone-based pool lubricant during reinstallation.
Immediate Replacement
Replace immediately if you observe water seepage around the cap or feeder lid, or if the filter loses prime frequently.
Genuine Pentair Part
Factory-spec component ensures proper fit and material durability
Simple Installation
Drop-in replacement requires no special tools or technical expertise
Multi-System Use
One part number covers filters and feeders across Pentair product lines
