Hi Andy,
Last year I noticed it was getting hard to find. Coverite Balsarite
So I bought a large 16oz can of it to have on tap. It's a latex film great
for fuel proofing the front end of a plane and around the wing saddle.
I also use it on ply so shrink film will stick better to it. There are hundreds
of cans out there in small hobby shops it's how I found mine.
Searching for it on main stream sites is getting tough but not impossible.
Most sites say:
"Discontinued, no longer available for purchase"
Check this discussion out:
https://www.rcgroups.com/forums/show...e-to-Balsarite