"The oring is compatible with Pentek 151122 and the following filters :
► Pentek Big Blue (BB) #10, #12, and #20 housings with 3/4"" inlet/outlet connections, Pentek 150071
► Ace Hardware 45025, 46764, 46764
► American Plumber W34-PR, WC34-PR, WV34, WVC34
► Ametek Kleen-Plus PSCL-SI / PSCL-S1, PS-OO / PS-00, PVHCL-SI / PVHCL-S1
► Culligan HF-150, HF-150A, HF-160, HF-360
► DuPont WFPF38001C
► Omnifilter WH1, WH5, WH12, OB1 (Series A), U25 (Series E)
► Aqua-Flo 26264

The 151120 o-ring is a direct replacement for the following other part numbers:
◆ Ace Hardware 46766
◆ American Plumber 152030, W34-OR
◆ Ametek Kleen-Plus 151120-03, OR-34
◆ Culligan 01019184, 151120-27
◆ DuPont WFAO150
◆ Everpure EV311240
◆ Hydrotech 151120, 34002028
◆ Omini 19125
◆ Omnifilter 151120
◆ Pentek 151120, OR-34
◆ Pura 151120
◆ Sears 900375, STD302241
◆ US Filter OR-34
◆ Waterway 805-0241

✪ The o-ring is made of nitrile butadiene rubber (Buna-N) which offers superior flexibility and resistance to tearing during installation and use.

✪ This o-ring fits Pentek Big Blue and 3G filter housings, which are used in various applications and labeled under many brand names (see above).

What to expect:
✪ This item includes one o-ring in a resealable poly bag, flat packed and not twisted like many others. This makes it much easier to install as the o-ring will sit flat in the groove while you re-seal the housing."