KleenWater KW108 Square Cut O-Rings, Set of 3, Compatible with 3M Aqua-Pure 68898-31, Pentek 151254, American Plumber WBC-OR and Selecto Scientific 101-151
- Please note these are are the less common "square cut edge" type
- Replacement for 3M Aqua-Pure AP801 68898-31
- Replacement for Pentek Pentair "Big Blue" 151254
- Replacement for American Plumber W10-BC & W15-BC part # WBC-OR
- Replacement for Selecto Scientific 101-151
Compatible with 3M Aqua-Pure 68898-31, Pentek 151254, American Plumber WBC-OR and Selecto Scientific 101-151.
This o-ring will accommodate the filter housings referenced above which require large diameter cartridges which have an approximate diameter of 4.5 inches. The o-ring itself actually measures approximately 5 3/4" (inside diameter). 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.