Here's what I've done in the past to repair a number of cracked or
broken plastic items, such as a snowmobile gas tank and a vacuum
Hopefully you have access to a Weller soldering gun. At least one of
the tips that comes in the case is a flat blade which is tilted on a
bit of an angle. Using a tie wrap as filler material use the blade of
the Weller and melt in some additional plastic using the tie wrap. The
heat from the gun shouldn't be nearly enough to worry about igniting
anything in the tank.
As I said, this has worked like a charm for me in the past....good
You want some Chemseal CS 3204 or some PRC PR 1422. These meet the old
mil spec and aviation standards for 8802 which is the best fuel tank
sealant made. It was deleveloped for usage with wet wings (wing tanks
without bladders) and gas has no effect on it. I has been in usage
for over 50 years. You can apply to stuff to a tank with a full fuel
tank that is leaking and it will stop the leak right now and it will
never leak again.
JP4/JP5/JP8 goes right through 8802. I don't know what sealant you are
thinking of but it isn't 8802. It makes a better weather seal than fuel
seal. On the Hornets we shoot the wings with a foam like putty with a
pressure gun. I can't remember the mil-spec.
Lots of homebuilt aircraft are flying with fuel tanks sealed with 8802 and
its predecessor 7502 and many of them use car gas.
At least one homebuilt jet, the BD-5J has integral tanks sealed with 8802
and Jet-A isn't that much different than JP5.
I stand corrected. It is commonly used as a fuel system sealant, but not on
the aircraft that I worked on. My personal experience with the stuff showed
it to be a piss-poor sealant for repairing tanks that are already leaking.
Maybe because it's impossible to get leaking wing tanks clean and dry
without taking the wings off and de-skinning them. That doesn't happen at
the squadron level.
Guess again, I worked is aircraft mod for many years and they used 882
all the time and so much that it was a regualr benchstock item. THey
also to use it to temp fix fuel leaks on B52's. It is great stuff.
Back in the early 80's I had a fuel tank leak that I could not stop
and I put a tub of this stuff on while it was still leaks and it never
leaked again. JP4/5/7/9 will not effect it at all. You are in error
here because I have seen it used on it many times.
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