The quick answer to can you put rubber in the microwave is yes of course you can.
Can you put vinyl strap in microwave.
If you have tape that you think you need to microw.
Lacking a proper trim kit you may be able to strap the microwave in place securely from side to side using metal straps like plumbers tape or nylon straps.
Watch the record as it melts in the microwave and turn off the microwave when the record melts down the outer or inner sides of the bowl depending on how you have the bowl turned.
If this is your idea to get the tape more sticky then you stop and get some different better tape for whatever your are trying to do.
I have put vinyl on charger plates and plastic tumblers which don t go in the microwave and as a gift i add a slip of paper with washing instructions no one has given the gift back lol.
I would assume that the process of the microwave would damage the vinyl.
Then you can fit wood trim around the front for a clean look.
As you surmised the answer does vary according to which.
Turn the microwave onto the regular cooking setting and set the timer for 10 minutes.
But you wanted to know something more specific namely is it then safe to turn the microwave on.
Ba dum tish the answer to that question can you microwave rubber.
First let me say that there is no reason to ever micro tape.
Pressure sensitive adhesives aka self stick adhesives that don t require solvents or heat to activate the adhesive shouldn t be used in the oven or microwave for a couple of reasons when heated at high temperatures the adhesive can melt and give off an odor.