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Cascadian Water


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P-151122 O-Ring for 1st Generation POE Systems. Image
Identify which generation is your Cascadian water treatment system. Image


O-Ring for 1st Generation POE Systems with 4.5" diameter filters.

This P-151122 O-Ring fits 1st generation ICS Whole House POE systems with bottom drain sold from March 2011 to May 2019.

This O-Ring is BLACK COLORED and will not fit 2nd generation treatment systems with a BLUE COLORED O-Ring.

To purchase the second generation blue colored O-ring you need PN: AF-ORING45   


Replacement filter housing O-Ring for 1st Generation Water Treatment Systems including;

Determining Your ICS's Generation

This will point to a page that explains the differences between gen 1 and gen 2

  • Eco-Friendly

    No water waste

  • Legal Everywhere

    Our filters can be used where salt softeners are banned

  • Easy Maintenance

    Change filters once or more per year

  • 60 Day Guarantee

    Return it, not questions asked

Rely on our expertise to deliver the simplest water treatment

– Cascadian Water has served the needs of our community for nearly 30 years