Heavy Duty 1.5 Inch Union O Ring | Pentair | U9-226Z (Fits 1.5 Inch Union)

Pentair 1.5" Union & Diffuser O-Ring | U9-226Z is the essential replacement that keeps your pool equipment sealing tight at 1.5-inch unions. This authentic Pentair part helps maintain steady water flow and consistent temperature across your diffuser and filtration connections, so you can enjoy a longer, more comfortable swimming season.

Designed for compatibility with standard 1.5" union/diffuser assemblies, this O-ring minimizes leaks that can rob you of heating efficiency and filtration performance. Replacing worn seals quickly restores system reliability, reducing the need for major service calls.

• Authentic Pentair replacement part (U9-226Z) for 1.5" unions
• Prevents leaks at diffuser and valve connections, preserving flow
• Easy maintenance fits common pool heater and filter setups
• Supports reliable seasonal use and durable performance in typical pool chemistry

Keep your pool running smoothly with a precise seal—add the Pentair 1.5" Union & Diffuser O-Ring to your maintenance kit today and enjoy leak-free operation tomorrow.