Pentair Replacement O-Ring

Pentair 87300400Z Replacement O-Ring (2-447, 50 Shore, Buna-N)

A genuine Pentair O-ring crafted from Buna-N (nitrile) rubber at 50 Shore hardness—designed to restore a tight, chemical-resistant seal in your filter assembly. Perfect for Clean & Clear®, System 3®, Sand Dollar® and similar Pentair filtration systems.