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Pentek O-Ring for Slimline 3/8" Undersink Systems

Pentek 151231 | Our#: 175720

Replaces These O-Rings

  • American Plumber OR-233
  • American Plumber 151231-51
  • Ametek OR-233
  • Culligan 411310
  • Pentek RO-3000
  • Pentek OR-233

Fits These Housings

  • Ace Hardware 4158622
  • American Plumber WRO-3500
  • American Plumber WRO-3000
  • American Plumber WLCS-1000
  • Culligan US-640
  • Culligan US-600
  • Culligan SY-2650
  • Culligan SY-2500
  • Culligan SY-2300S
  • Culligan SY-2300
  • Culligan SY-2100
  • Culligan SY-2000
  • Most Brands 3" Dia. Housings
  • Pentek US-1500
  • Pentek US-1000
  • Pentek RO-3500

Pentek O-Ring for Slimline 3/8" Undersink Systems

Pentek 151231 O-ring (OR-233) is used in Ace Hardware, American Plumber, Ametek, Culligan, MasterPlumber, Pentek, and US Filter Plymouth Products.   This O-ring fits in many undersink point of use systems that have housings with a 3/8" inlet/outlet.  O-ring approximately 3" in diameter, ( 3-1/8" )

Important O-Ring Tips:

  • Inspect O-Ring during each filter change for damage, cracks, splits
  • Cover O-Ring with silicon lubricant during each filter change
  • Do not overtighten filter sump (do not use filter wrench to tighten sump - only use wrench to loosen sump)
  • Replace O-Ring every two filter changes