The Water Purifier cartridge replaces the cartridge shipped with your original unit and is easily installed. The filter's "smart-chip" monitors system performance and sends messages about function or replacement timing, which appear on the unit's lighted display. If you registered your Water Purifie...

The Amway compatible o-ring is 5-3/8" in outer diameter, 5" inner diameter, and 3/16" thickness. The Amway Quixtar compatible oring is for the Amway E-9225 water filtration systems. The Amway o-ring is 5-3/8" in outer diameter, 5" inner diameter, and 3/16" thickness.