Pentek Buna-N 151122/OR-BB O-Ring Gasket for Big Blue Housings

The Pentek 151122/OR-BB Big Blue Buna-N FDA Grade o-ring fits #10 and #20 Big Blue Housings. FDA Grade. The OR-BB Pentek o-ring creates a tight and powerful seal between the cap and bottom of your filtration housing, reducing risk of leakage and corresponding water damage. A genuine OE part that should be replaced every third time you change your water filter. For best results, ensure your o-ring is lubricated with silicone grease, prior to installation.