I received a remarkable Kodak Master view with a very clean 12 inch ƒ6.3 lens.

My question is elementary. The previous owner sealed all around the rear retaining ring with an interesting black rubber-like, entirely compliant soft sealer. I want to remove it to use my own method or a new board.

The question is can I just melt it away with paint stripper? Acetone?

Edit: Silly me, I merely have to try acetone.