PENTAIR R/B FILTER CAP 0-RING - 17-2009

SKU: 17-2009
Regular price $10.74

The Pentair R172009 Cap O-Ring delivers the chemical resistance and durability pool service professionals demand for reliable feeder and filter maintenance. This premium Viton rubber O-ring ensures leak-free operation in Pentair Rainbow chlorinators and cartridge filters, reducing costly callbacks and maintaining your service reputation.

Professional Service Benefits

Engineered with Viton rubber construction, this O-ring withstands harsh pool chemicals and extreme temperatures that destroy standard rubber seals. The precise 3-3/4" inner diameter and 3/16" cross-section provide perfect sealing for Rainbow models 300, 302, 320, and 322, plus standard and high square feet cartridge filters. Quick installation saves valuable service time on every job.

Why Pool Contractors Choose MT Pools

Our superior customer service and daily recurring customer support ensure you have the right parts when you need them. With wholesale pricing that protects your margins and reliable inventory management, MT Pools keeps your service operations running smoothly and profitably.

Frequently Asked Questions

Which Pentair models use the R172009 O-ring?

The R172009 fits Pentair Rainbow chlorinator models 300, 302, 300-29X, 320, and 322, plus standard and high square feet module cartridge filters.

Why choose Viton over standard rubber O-rings?

Viton rubber provides superior chemical resistance and temperature tolerance, lasting significantly longer than standard rubber in pool chemical environments.

What's the proper installation procedure?

Relieve system pressure, remove old cap, lubricate new O-ring with silicone lubricant, install O-ring, and hand-tighten cap. Never over-tighten.

Does MT Pools stock bulk quantities for service companies?

Yes, MT Pools maintains inventory for bulk orders and offers competitive wholesale pricing for pool service professionals and contractors.

Order Today

Stock your service truck with genuine Pentair replacement parts from MT Pools. Our expert team provides technical support and fast shipping to keep your pool service operations profitable and efficient.

• Premium Viton rubber construction for chemical resistance
• 3-3/4 inches inner diameter with 3/16 inch cross-section
• Compatible with Pentair Rainbow models 300, 302, 300-29X, 320, 322
• Fits Pentair standard and high square feet cartridge filters
• Black color for professional appearance
• Superior temperature and chemical tolerance vs. standard rubber
• Precise OEM specifications for perfect fit
• Quick and easy installation process
• Reduces maintenance callbacks and service issues
• Genuine Pentair replacement part (R172009)