Replacement O Ring for Pentek Filter 4.5

Part #151122 BB Buna-N replacement o ring for Pentek water filter. Can be used with housings which accomodate the industry universal 4.5 inch cartridge width. This o ring is compatable with water filter housings marketed under the following brands: Ametek, Kleen Plus, Plymouth Products, Pentair and U.S Filter (4.5 inch cartrdige size). We recommend consumers keep a spare o ring on hand to avoid urgent situations.