Pentek 151120 Buna-N O-Ring for 3/4" FPT Standard Housings

(3/4 cap, 4 sets of 5 ribs) and 20" Filter housing (3/4 cap, 6 ribs)

Part Number: 151120
In Stock, Ready to Ship!
Price: $1.79 
10+ for $1.34 ea
50+ for $1.16 ea
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O-Ring for #10 (10") and #20 (20") Pentek / American Plumber /Ametek/Plymouth Standard Specifications


  • O-Ring For Standard Size Water Filter Housing
  • Buna-N FDA Grade
  • 4-1/8" Outer Diameter

O-ring for #10(10") and #20(20" Pentek/American Plumber/Ametek/Plymouth Standard will also fit:


  • Culligan: HF-150, HF-160, HF-360, 01019184, OR-34
  • ACE: 45025, 46764, 49560, 46766
  • Ametek: 151120-0, OR-34, PS-00, PSCL-Sl, PVHCL-SI
  • American Plumber UV-110 & UV-120 O-Ring
  • Everpure: EV9795-90, EV9795-80, EV3112-40
  • OmniFilter: 243006, OB1 Series A housing, U25 Series E housing
  • PURA UV20 and UVB systems manufactured before May 2009*

NOTE: This o-ring is compatible only with PURA systems manufactured in April 2009 or earlier. The date code is located on the back of the control module. Control modules are replaced every 3 to 5 years, so it is recommended that you consult the owner's manual that was included with your system to ensure you order the correct o-ring. If your system was manufactured after April 2009 you should order part number 92513.

Also known as DuPont® WFAO150

Also Compatible With:
Culligan Water Filters 01019184, OR-34
Everpure EV3112-40
Nu-Calgon 3112-40
OmniFilter, Flotec 243006
O-RINGS 151120-27, OR-34
Pentek UV Lamps, etc. 143011
PURA A51021, 34202028, 34202035
Pura UV Lamps & Filters A51021, 34202028, 34202035