Perfect fit.

Perfect fit.

Replaced an OEM o-ring that was leaking like a sieve. Applied Aladdin silicone lube and no leaks on startup.

It's round. It's rubber. It fits. It works. Not sure what else I can say about it. The last one I had lasted 20 years, I hope this one does too. Filter canister is not longer leaking so color me happy!!

This O-ring was a perfect fit for my Pentair FNS Plus 48 filter.

Fits well

I have ordered this std gasket and work perfectly but I wonder what the perfectly fit gasket will be I guess that one five star but this std one I guess four stars but save u money order this cheap one NO LEAK IT WORK NO ONE KNOW WHAT A PERFECTLY FIT WILL BE EXCEPT MORE MONEY

could get the pool guy to come out so My son-in-law and I did this ourselves. Saved us a lot of money

Cleaned by Pentair 420 last weekend, started leaking all around when I reassembled it. Bought this o-ring, applied silicone grease and it sealed everything right back up. Not a drop of water has come out even during high pressure priming

Worked perfectly

Perfect fit. Couldn't be happier. After buying an absolutely abused house with a disused pool, I couldn't be happier with this product. I wrestled with the lap-band clamp thing/last O-ring tag team, while it played the old “wait for the lid to get 99 on, and then shoot out dramatically from one side and the try and get inside the filter housing. Fck this guy” game..... So I made a new filter belt-clamp-belt tensioner pulley of my own, light years ahead of pantera's. And, in combo with this o-ring being the first thing in a year that that didn't need the assistance of a box of 16D, some sort of patching compound, or my sawzall to fit where it's supposed to, well, made my fkin week. And Idk wtf sheerness was a rating on here, but no you can't see through it....

Gasket was a perfect fit for my older Pentair model 190029

Works great for Pentair FNS plus 60!