Pentek (143216) O-Ring for ST-1, ST-2, and ST-3 10 inch x 4.5 inch Big Blue Filters2763 Calibrate pH meters weekly when

Calibrate pH meters weekly when performing daily measurements to maintain accuracy in critical applications

ResinTech SIR-110-HP strong base anion resin exhibits unusually high selectivity for perchlorate ions while maintaining low affinity for multivalent ions

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and well water applications using Big Blue style filter housings

Integrated pressure tank stores boosted water at system pressure and supplies peak demand without immediate pump activation

Pentek (143216) O-Ring for ST-1, ST-2, and ST-3 10 inch x 4.5 inch Big Blue Filters2763 Calibrate pH meters weekly whenPentek 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