Culligan Whole House Filter O-Ring for Water Filtration System

The Culligan OR-233 O-Ring is designed for use in the following water filter systems: Culligan models US-600A, SY-2000, SY-2500, SY-2300, SY-2300S, SY-2650, RO-3000 and RO-3500. The o-ring is used to seal the housing canister to the housing cap to prevent leaks. Replace your o-ring with every third filter change or when there is damage to prevent leaks.