Pentek O-Ring for 5", 10" & 20" Slim Line Filter Housings

Pentek 151121 O-Ring for Slim Line, Standard Flat Cap and Counter Top Filter Housings

Replacement O-ring for Ametek/Pentek 5", 10", and 20" filter housings in the Traditional Slim Line Series, Pentek 3G Slim Line Series, Pentek Counter Top Slim Line Series, and Standard Flat Cap Series Filter Housings. The O-Ring is constructed of Buna-N FDA Grade rubber for added strength, elacticity, and reliability. Replacing the o-ring regularly can help ensure a leak-free water filter.

Pentek 151121 o-ring can be used in place of the Culligan Water OR-38.

Pentek 151121 O-Ring is the factory-original replacement for Pentek Filter Housings:

Specifications for Pentek 151121

Note: This O-Ring is not compatible with Ametek/Pentek Standard #10 and #20, 3G Standard, or Valve-in-Head (VIH) Series Housings, which use 151120.

151121 o-ring does fit Standard Flat Cap, but does not fit Slim Line Flat Cap, which uses a special o-ring we do not carry.