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Pentek Replacement Water Filter Cartridges, Faucets, O-rings, Housing Spanner Wrench and Water Filtration System Parts for Pentek Water Filters Systems. Be sure to sanitize your Pentek drinking water filter system each time you change the replacement water filters.
Pentek # 151121 O-Ring For Slim Line Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Slim Line Water Filter Housing. Buna-N FDA Grade. (Slim Line Housings Use A 3 1/2" diameter "O" Ring) Ametek # 151121 Same as Culligan OR-38 O-ring.