This is a Star Filter Lid O-Ring, 3-1/2 inches, designed for the PacFab Star Filters. This o-ring will also fit other products. It is identical to these part numbers: Speck Pump O-Ring 4121, Pentair/PacFab 191424, and Speck O-ring 2920141210.
This o-ring has been manufactured in accordance with OEM specifications and is designed to meet or exceed the original manufacturer specifications.
