KleenWater Replacement O-Rings, Compatible with Aqua-Pure AP200, Set of 2;

Two KleenWater AP217OR water filter housing replacement o-rings for Cuno Aqua-Pure AP217. Replacement o-rings for 3M Purification Cuno model AP200.

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 sump and the water filter head. The most common o-rings used in water filtration are made from Buna N material. Buna N is also commonly referred to as nitrile. This is the ideal choice for cold water filtration because they are inexpensive and have superior performance characteristics. KleenWater is a trademark of Pavel Water Filtration. Enter KW217-RG217 in the Amazon Search Bar to purchase a cartridge with o-ring kit.