Whirlpool WHKF-DWHBB Compatible O-ring - Filter Replacement O-ring, Set of 6 coffee/ice filter It sequesters the hardness ions

It sequesters the hardness ions thus inhibiting them from precipitating out of the water to create scale

These cartridges are compatible with Culligan reverse osmosis drinking water systems

Recommended cartridge change every 6 months or upon substantial pressure reduction

75 exact) inch dimension

Provides "Bottle Quality" water without the expense and hassle

Whirlpool WHKF-DWHBB Compatible O-ring - Filter Replacement O-ring, Set of 6 coffee/ice filter It sequesters the hardness ionsKleenWater Filter Housing Replacement O Ring for Whirlpool WHKF DWHBB, Set of 6 This o ring will accommodate filter housings which require large diameter cartridges. These cartridges have an approximate diameter of 4. 5 inches. The o ring itself actually measures approximately 5. 465 inches (inside diameter). We recommend consumers keep a spare o ring on hand to avoid urgent situations. An o ring facilitates a water tight seal between the water filter