I opened it.Here is all you want to know about tape. I have used Fasson Fastape 0895 Which is probably the year it was made.
Look here!
https://datasheets.globalspec.com/ds/4289/BudnickConverting/pg1
Dude... get your own toaster oven.I used the same kinda tape on my turbo car to keep the downpipe from cooking hoses that are in close proximity. Also did header wrap on the pipe. Been good so far. My woman would not be happy if I was cooking tape hahaha. She was not to fond of my polyurethane filled engine mounts I put in the oven to cure.
Yeah I'm working on getting a new place hopefully with 240v in the garage or a place I don't have to tear up concrete in order to put it in. Would like to have an oven in my garage for projects or baking cookies and not having to share.Dude... get your own toaster oven.
The tape I used has held up well to fuel, oil and heat.