It is labeled as time-ex with a sticker stuck over the date that won't come off without destroying the manufacturers label. I believe it was rescued from a BA skip with about 3 gallons remaining.
I guess it is safe to paint it on over steel and ali sections to ward off damp whilst in storage? It looks as if it dries into a fairly resilient, slightly soft coating that will keep in place for a while. I'm hoping I can use it on a few of my spare parts since I seem to be collecting quite a lot of bits lately.
Spray it on and dont breathe it in
Is it toxic if it gets on skin? It eats right through nitrile and latex gloves.