NPD sells it. Problem solved.

 

Napa has it online, also you can get it on Amazon. Now if you're looking to walk into a store and get it off the shelf, then that's a different story.

 

Automotive paint supply store is where I get mine

 

http://www.amazon.com/3M-08578-Black-Strip-Calk/dp/B000PEZ1L4

 

yea, I want to install the tank tomorrow. Didn't think it would be a hard thing to find. Eastwood is about 40 mins from me but really don't want to do that trip just for caulk. Not to mention the stuff is expensive :\

 

So if you don't spill gas in your trunk and need to seal it tomorrow, can't you just buy these or something similar? Probably not as good as the 3M but cheaper and might be available to pick up right away.

Frost King E/O 1/4 in. x 90 ft. Rope Caulk Wood Tone-B2WT - The Home Depot

 

The 3M stuff goes for over 20 bucks on most sites. Amazon has it for $19 but then there's shipping. I used the same stuff I sealed my windshield with to seal the gas tank onto the car because I couldn't find the package of 3M strip caulking I had. I found it after I put the gas tank in. Figures.

 

I used Window Weld on my tank, it did a good job, BUT I upgraded to the 70 tank and it was a nightmare getting it out. This stuff dries hard and seals great. Needless to say I will be using the strip caulk on it. Already purchased 3M brand.

 

i forgot there is an auto supply place near by. Been there once before and remember not being to impressed with the place which is probably why I forgot about it. Maybe they'll have the stuff. The PO used some white stuff. Was still soft and not to hard to remov. Wonder what it was.

 

Sounds like he used house caulking. If you can't find 3M strip caulk locally I'd be tempted to go to Home Depot or Lowe's and look for this..

 

My local NAPA had it on the shelf.

 

If you just need the tank to go in tomorrow, whatever strip caulk you can find will work. Just something to keep the exhaust fumes out of the trunk by filling imperfections in the mating surface between the tank and flange. You can always pull it and install the correct stuff at a later date.

My car's tank is glued into the car, incidentally... my best friend was over "helping" with the car. Asked him to put strip caulk down and he grabbed the wrong caulk gun. It was some of that Window Weld stuff and last time I checked, I could jack up the entire rear end of the car by the tank (with none of the bolts in). Guess that thing isn't coming out for a while LOL.

 

Oh boy that sounds like a mess.

 

I bought mine off the shelf at local Carquest, 3M strip Caulk...

 

I use rope caulking from Ace hardware. It does not come in a tube. It comes in a roll in a box. Works great and seems to be the same consistency as the original.

 

I can't stand using the strip caulk on cars. The entire Mustang tank design really bugs for that matter. I'd wager we all engineered better stuff out of erecter sets and tinker toys when we were 5.

Instead of strip caulk I reinforced the entire flimsy area with structural aluminum bracing. I used a high density adhesive backed foam in place of the strip caulk. It really conforms well and fills/spreads nicely and will be easy to reckon with someday. Then I capped the whole deal with a 1/8" thick aluminum pan for added safety/rigidity, improved appearance nd used bolts/washers/nyloc nuts instead of the sheet metal screws to bring it all together through the original holes in trunk pan. Nobody else skimped that badly to use the tank as a trunk floor at that time and mount in a ridiculously weak fashion. I couldn't allow substandard design to persist any longer. This is more than what you may want but it doesn't require any strip caulk.

 

Ace Rope Caulk Weatherstrip - Ace Hardware & Home Centre, Maldives Comes in white or brown.

 

And for how long were you planning to install tank? Worst case if no autobody shop nearby, an Autozone sells windshield caulking, stays plyable. Also Virginia Mustang along with other vendors sells 3M.

 

I did similar to what Will did and used adhesive backed foam to seal it. So that removal later won't be messy. Seems to be doing a good job.