Pentair Bulkhead O-ring, OEM 2 in, Fits Valves, Heaters, Filters, 224494
274494, Genuine Pentair Bulkhead O-ring has many uses. 2.75in diameter. Fits Pentair Nautilus NS/FNS/FNSP, Seahorse FSH, and Triton, Triton II, Triton C, Triton C-3, sand filters. Also Fits Mitra / Mytilus pool filters. Also fits Pentair Minimax NT pool heaters unions and Pentair HiFlow, Full Flow and Push Pull valve unions.