Pentek (143216) O-Ring for ST-1, ST-2, and ST-3 20 inch x 4.5 inch Big Blue Filters2043 NIST Certified

NIST Certified

This pre-assembled 5 micron sediment filter system handles the demands of larger homes where standard 10" x 2

Installing Your Check Valve

Factory-spec sealing component designed for reliable valve operation and leak-free performance

304 Stainless Steel 300 PSI Max Dual Port Design 1/2" Side Port

Pentek (143216) O-Ring for ST-1, ST-2, and ST-3 20 inch x 4.5 inch Big Blue Filters2043 NIST CertifiedPentek 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