Pentek 143339 Replacement Head Nut Gasket for ST Series Housings

The Pentek 143339 head nut gasket is the replacement head nut gasket for the American Plumber, Ametek, Pentek, US Filter ST-1, ST-2, ST-3 stainless steel water filter housings. Made to handle high pressures without leaking. A must have for anybody with a stainless steel housing.