Pentek (143216) O-Ring for ST-1, ST-2, and ST-3 10 inch x 4.5 inch Big Blue Filters2763 32mm diameter with optimized slot

32mm diameter with optimized slot pattern

Proprietary blend

ensuring it seats properly on the center post or sump bottom

and well water applications using Big Blue style filter housings

Pentek (143216) O-Ring for ST-1, ST-2, and ST-3 10 inch x 4.5 inch Big Blue Filters2763 32mm diameter with optimized slotPentek Replacement O Ring Pentek 143216 O Ring for ST 1, ST 2, and ST 3 Housings Genuine OEM rubber gasket engineered to maintain a leak proof seal in Pentek stainless steel filter housings OEM Part Food Grade Safe OVERVIEW Why This O Ring Matters The Pentek 143216 is a precision molded rubber O ring designed specifically for the ST 1, ST 2, and ST 3 stainless steel filter housings. This isn't a generic gasketit's an exact fit replacement that