Culligan 4 In. D Rubber Replacement O-ring 1 Pk

The Culligan 4 in. D Rubber Replacement O-Ring is a durable replacement component designed to maintain a secure seal in various under-sink and RV water filtration systems. Constructed from high-quality rubber, it effectively prevents leaks by sealing the housing canister to the cap. Compatible with multiple Culligan models and other brands, it's recommended to replace the O-ring every third filter change or upon signs of wear.