Old Nautilus PAC-FAB Filter O-Ring

[CampJoe]

I have an old Nautilus PAC-FAB DE Filter. I can't read the label any longer and I need to order the large O-Ring that goes between the top of the tank and bottom. The tanks are held together by a band that run around the center of the tank. As you can see from the attachments, my filter has a small hole for the pressure valve. I ordered a PACFAB 18" 152127, but DOESN'T FIT - To big). Can someone help me locate a manual I can download and the o-ring part number?

Thank you,
Joe

 

[cowboycasey]

I bought an assortment O-ring kit and have had great success finding exactly what I needed

https://smile.amazon.com/s?k=o-ring...-ring+Rear,aps,169&ref=nb_sb_ss_ts-doa-p_1_10

 

[CampJoe]

Hey Cowboy-Casey. Thanks for the post. I need the large O-Ring between the top and bottom of the tank. I do have a set of small O-Rings though.

 

[colonelkirby]

I have the NS-48. I had the attached archived on disk.

 

[Poolbreh]

I can’t find the manual on it but I think you are looking for the trapezoid oring. #195008
195008 O-420 Pool Filter Tank O-Ring for Pentair FNS DE Filter Amazon.com: 195008 O-420 Pool Filter Tank O-Ring for Pentair FNS DE Filter: Garden & Outdoor

 

[ShinDiors]

Hate to bump up the old thread, but this is a common problem for this PACFAB NS stainless steel tank. From the manual, the part needed is 152127, but the stuff from amazon seems to hang loose. Even the top review for this product mentioned this, but failed to really point out where exactly he ordered the proper sized one. I ordered one, and it is even larger than my old one (already a bit loose). Its cross-section is square compared the round shape in the old one, and it was leaking. Had to change back to the old oring to stop the leak, but still left pondering where I could buy a proper size one.