Culligan HD-950 O-Ring Water Filtration System

The Culligan OR-100 O-Ring is designed for use in the following heavy-duty whole house water filters with a 1 in. inlet/outlet: Culligan model HD-950A. The o-ring is used to seal the housing canister to the housing cap to prevent leaks. Replace your o-ring every third filter change or when there is damage to prevent leaks.