Blue Goop! Looking for the right stuff

[Charlie Wilson]

Hello, I have been searching everywhere for the Dumble approved blue goop. I know it is Permatex blue gasket maker, I just can’t figure out when. Any ideas?
CW

[Stephen1966]

Assuming he was buying the stuff off the shelf, does Permatex come with a use by date? Probably not but it seems we have a better idea of when the amps were built.

Providing the stuff doesn't become hygroscopic or go brittle with age and heat, does it really matter? Is this for a restoration, or a new build?

[Smitty]

Have you de-gooped an original and now need to re-goop it? We promise not to tell anyone as long as you send pics!

[martin manning]

I know it is Permatex blue gasket maker, I just can’t figure out when.

Looks like you want Permatex 8002, which appears to be morphing into 81724 Ultra Blue. 80022 is still listed for sale at multiple outlets. It's a gasket material, but non-corrosive. Did you mean to say "what" and not "when?" I certainly wouldn't use any old stock.