Fleck (12281) O-Ring, Top of Tank; 3-1/8" ID, 3-1/2" OD, 3/16" Width Pentek (151254) Big White & Big Clear Filter Housing O-Rings; Aquapure; Aqua-Pure and sanitizers common in water

and sanitizers common in water treatment systems

This is the factory-correct component for systems where water flows upward through the media during service cycles

aligning all bolt holes with the pump base and frame structure

Includes reference TDS chart on back of unit

Fleck (12281) O-Ring, Top of Tank; 3-1/8" ID, 3-1/2" OD, 3/16" Width Pentek (151254) Big White & Big Clear Filter Housing O-Rings; Aquapure; Aqua-Pure and sanitizers common in waterThe Fleck 12281 O Ring provides a reliable seal at the top of your water softener tank, preventing leaks where the control valve meets the mineral tank. This AS568 338 standard O ring measures 3 1 8" inner diameter, 3 1 2" outer diameter, and 3 16" width for precise fitment on Fleck valve systems. TECHNICAL DETAILS Fleck 12281 O Ring Specifications Part Number Fleck 12281 AS568 Standard Size AS568 338 Inner Diameter (ID) 3 1 8 inch Outer Diameter (OD)