Fleck (17772) Silicone Seal Carbon Block1441 Mineral buildup on housing walls

Mineral buildup on housing walls is normal and indicates proper media function

5-inch diameter provides high flow rates suitable for point-of-entry installations serving entire households

this is the OEM component designed for the job

Low Range (Fe LR) Measurement Range 0 to 5

Cover & Base

Fleck (17772) Silicone Seal Carbon Block1441 Mineral buildup on housing wallsFleck Control Valve Component Fleck 5600 Silicone Seal (Model 17772) Factory spec seal for Fleck 5600 control valves. Prevents leaks at the piston assembly and maintains proper valve cycling pressure. OEM Part Fleck 5600 Model 17772 WHAT IT DOES Critical seal for piston operation The Fleck 17772 silicone seal sits inside the control valve piston assembly and creates the hydraulic pressure differential that allows the valve to cycle through backwash,