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Your cart is empty.This o-ring is designed to use with Pentair Nautilus pool and spa filters. Measures 18-inch.
BTN-TX
2025-09-05 12:52:45
It seems that Pentair has corrected the issue with the o-ring diameter being too large. It fit my Nautilus (48) perfectly. I actually had to roll it down the tank to take the photo. The rubber material is firm, dense, and approx 1/2-inch thick - all as it is supposed to be. Also note - the correct format for the material is indeed round. The ring will compress to a flattened or wedge shape after time under clamping pressure, but it is not manufactured that way.
Jennifer and Ryan Gaston.
2025-09-03 13:18:37
This diameter of the o-ring is too small for the Pentair Nautilus NSP-72 DE tank top.
Dawg
2025-05-15 14:04:52
Slightly smaller than the original. Took two people to "Stretch" it around. But it fit good and did not leak.The pool "stealer" wanted $60.
Kevin S. McKeen
2025-05-12 13:09:17
Fit a tad big but not enough to matter - sealed like a champ - working very well
Customer
2025-05-06 14:48:27
Gasket arrived quickly and fit as expected.
D. Coral
2025-04-24 15:31:23
I have a classic stainless steel PacFab NS48 DE filter, and learned the hard way that Pentair is incorrectly cross referencing this part #152127 as a compatible o-ring. If you try to use this one, it is about 1†too big.Many suppliers also sell part #O-184 listed as compatible with PacFab NS series. However to my amazement I found that each brand of O-184 is a slightly different size!Determined to find one that fits, I ordered 5 different o-rings from different brands. I found one that fits perfect. The package says “90-423-1184 O-184 Generic.â€I also bought the one from brand Super-Pro “O-184-9†and that one is too big (just like the one on this product page).It is crazy that Pentair and other suppliers are cross referencing different size o-rings under the exact same part numbers.I hope this helps someone get straight to the right part number for the classic stainless steel NS DE filter.
Anisha R.
2025-04-02 09:09:02
not correct size
Joe Boyd
2025-01-13 17:32:32
Item arrived as described, Timely Manner, 1/2 Price of local box store. Highly Recommend
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