The Pentek 151121 o-ring is compatible with the following filter models:Pentek #5 and #10 Slim Line Housings, 3/8″ Inlet/Outlet Slim Line Housings with a 3.5″ diameter housing sump, and 3G housingsAce Hardware 45335, 45449, 48166, 49562, 4001699, 4158515American Plumber WLCS-500, WRO-3167Ametek Kleen-Plus / Pentek CSL-CIK, CCF-201, CTR-CMR-10, PSCL-C2, US-560, US-560K, SY-5167, SY-5197Campbell 1PS, 1PC, 2PS, 2PC, 1PSB, 1PCB, 2PSB, 2PCB, 1PSB1, 1PCB1, 2PSB1, 2PCB1Culligan RVF-10, US-316, US-550US Filter RO-2127, RO-2300, RO-2300-A, RO-3167The 151121 o-ring is a direct replacement for the following other part numbers:American Plumber W38-OR , 152031Ametek 151121Campbell 10800-034Culligan OR-38Pentek 151121
The 151121 O-Ring is used to seal Pentek and Culligan Slim Line Filter Housings (also manufactured by several other brands, see list above) which are used for drinking water purification, swimming pools, industrial purposes, as well as other applications. These o-rings are made of nitrile butadiene rubber (Buna-N) which offer superior flexibility and resistance to tearing during installation and long-term use.
