Ametek Water Filters was the previous name of Pentek Water Filters. Ametek is no longer used as the brand name in the water filtration industry. So all of the old Ametek systems can be serviced with replacement water filter cartridges, reverse osmosis membranes and RO system parts from Pentek and Pentair Water Filters. Pentair will replace the Pentek name.
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Pentek 158110 SlimLine 3/8" with pressure relief valve for easy filter changes. 5" Water Filter Housing with clear sump.
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.