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Pentek 151121 O-Ring for 3/8" and 1/2" #5 & #10 Slim Line Housings Specifications:

  • Inside Diameter: 3-3/8"
  • Outside Diameter: 3-3/4"

Pentek O-Ring Replacement Overview:

  • The o-ring is used to seal the housing canister to the housing cap to prevent leaks.
  • We recommend replacing your o-ring every third filter change or when the o-ring is damaged.

Pentek 151121 Oring Compatible Housings:

  • Any 3.5" Diameter Housings
  • #5 and #10 Slim Line Housings
  • 3/8" Inlet/Outlet Slim Line Housings with a 3.5" diameter housing sump
  • 3G Housings
  • Pentek 158622 10" 3G Slim Line Filter Housing 1/2" Clear Sump
  • Ace Hardware 45335, 45449, 48166, 49562, 4001699, 4158515
  • American Plumber WLCS-500, WRO-3167
  • Ametek Kleen-Plus / Pentek CSL-CIK, CCF-201, CTR-CMR-10, PSCL-C2, US-560, US-560K, SY-5167, SY-5197
  • Culligan RVF-10, US-316, US-550
  • US Filter RO-2127, RO-2300, RO-2300-A, RO-3167

  • The Pentek #237 O-Ring lso replaces the following o-ring models:

  • American Plumber W38-OR , 152031
  • Ametek 151121
  • Culligan OR-38
  • Pentek 151121, #237
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