Aladdin O343-0 Bagged O-Ring

Aladdin O343-0 Bagged O-Ring
A high-quality rubber O-ring sold individually for easy on-site replacement, designed to match OEM parts U9-200, U9-389 & U9-399. Perfect for Pentair RP cartridge filters and Sta-Rite systems, it delivers a secure, leak-proof seal to prevent water loss and airlocks—keeping your filtration running smoothly.