Pentair Square Ring Closure O-Ring 8-1/2" | Triton C-3 Sand Filter & Challenger Pump | 152509Z PCCF150 Compatible with all chemical systems

Compatible with all chemical systems and pool surfaces

Cleans and protects during the off season

confirm the color of your existing base — the SuperMax pump base is available in black

a trusted leader in pool filter technology

cross-reference the part number printed on the transformer body itself against 520722 to confirm fitment

Pentair Square Ring Closure O-Ring 8-1/2" | Triton C-3 Sand Filter & Challenger Pump | 152509Z PCCF150 Compatible with all chemical systemsThe Pentair Square Ring Closure (152509Z) is the OEM replacement closure O ring for the Pentair Triton C 3 Sand Filter and Challenger High Flow Pump lines. This single square profile ring seals the filter or pump closure, preventing bypass and pressure loss at the tank or pump lid junction. IMPORTANT: FILTER MANUFACTURING DATE TWO VARIANTS EXIST This square ring is confirmed for Triton C 3 Sand Filters manufactured before March 1997 and after March