I used toluene, worked great and made it wayyyyy easier to work with. I was able to get it from a local shirwin Williams, but the had to order it. Cost me about $20 IIFC.

I've bought Toluene at ACE hardware, and it also seems Sherwin Williams sells it -

http://www.sherwin-williams.com/home.../toluene-r2k1/

Used to use MEK to thin PS890 B1/2 and B2 enough to paint it on with an artist's brush. After changing divisions within the company (one where there was no MEK), I used acetone to do the same thing.

This was NOT for sealing fuel tanks or any other critical sealant job, just sealing external hardware (specifically, helicopter rotor head hardware) for corrosion prevention. If you really want proseal that's thin enough to brush on like paint, for a critical job like fuel tank sealing, you need PS890 A1/2 or A2.

PS890 Class A data sheet

source

Thanks
 

I just read all 92 posts on this topic. Thank you Rick and everyone else for the great breakdown. I feel 100% confident on starting my tanks this week. I love this site!!!

I got tired of searching for this thread every now and then, so I have made it a "sticky".

Just seems right that a thread about porseal be sticky:rolleyes:

Thanks, Mike. I just spit my morning coffee all over my iPad. Of course, it's black and thick as . . . well . . . you know. You just caught me of guard I guess. :-)

p.s. good call on the thread: it's one of my top-10s.

--
Stephen

Having trouble shooting rivets wet. Should i just be putting a dab in the hole and keeping the tail of the rivet clean until after bucking? Right now i have the stuff all over the rivet and the bucking bar goes bizerk! Also, what bucking bar works best in a tank?

Thank you to all who have added to this thread. i would be lost without it.

I too used this thread as my guide to sealing my tanks. It is slow tedious work, but mine came out leak free. I dabbed the dimple full of proseal and then inserted a rivet. I didn't have any trouble bucking the wet rivets. I used a tungsten bucking bar. Maybe your gun pressure is too high?

Proseal rivets
 

Same here. I did have to wipe off the surface of the tungsten bar occasionally.18-20 psi on my Sioux 3x.

Same here, I didn't really have any issues with the bucking bar. I did, however, have issues with the mushroom set sliding around. I'd been just using a plain mushroom set up to that point, but I bought one of the ones with the rubber ring for the tanks, and it worked much, much better.