I heard that enamel paint is considered oil based while acrylic is water based so wanted to verify that the paint is not enamel and I can use this on rubber without chemical incompatibility.
I believe oils and enamels are not quite the same thing. The oil used as a vehicle in oil paint hardens when it is exposed to air. I believe the oil is a mixture of various chemicals and some evaporate. Enamel vehicle, I believe, actually undergoes a chemical reaction that hardens it when the thinner evaporates and the vehicle is more exposed to air. They are both thinned with the same type of thinner, but the reaction of the vehicle is different.