Brand Name: Culligan
*Interior Diameter: 3-3/8 in.
*Material: Rubber
*Product Type: O-Ring
*Number in Package: 1 pk
*Exterior Diameter: 3-3/4 in.
*Inlet: 0.375
*Packaging Type: Bagged
*Wall Thickness: 0.1875 in.
*Shape: Round
*Brand Compatibility: Fits American Plumber, Ametek, Culligan, Pentek, US Filter Plymouth