Black O-Ring for 1st Generation (with black cap) ICS Systems for Whole Home or Business

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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;

  • 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, no questions asked

Frequently Asked Questions

Where does the ICS system go in my home?

Where it can fit, and where it can easily get access to your home's water source. This is typically a garage, crawlspace, or even a closet. If you have questions a plumber would be able to help you find the best spot. During maintenance you'll need to fit a bucket and have enough space to turn the sump wrench which comes with your system

How often do I replace the filters?

Most people replace their filters once per year, or sooner if they start seeing issues with their water again. Learn about water issues here

What is the return policy?

If you are unsatisfied within 60 days of purchase, return the housing and we'll refund your purchase no questions asked.

How fast do you ship?

We typically ship same business day if the order is placed before 2 pm PST using UPS ground.

Rely on our expertise to deliver the simplest water treatment