This Pentek 151122 OR-100 O-ring is used to seal water filter housings. It has an inside diameter of 5-1/2" and outside diameter of just over 5-3/4 inches and is made of nitrile butadiene rubber (Buna-N) for flexibility and resistance to abrasion...

This Pentek 151122 OR-100 O-ring is used to seal water filter housings. It has a diameter of 5-3/4 inches and is made of nitrile butadiene rubber (Buna-N) for flexibility and resistance to abrasion and tearing. This O-ring fits Pentek Big Blue...