I never tried isermal rescue tape before, but after using it, it is a must have for me both at home and on the boat.
You are likely used to wrapping things in electrical tape, stretching it out to form a tight seal. This is like that, but so much better.
It stretches out more than electrical tape and when you stretch it, it activates a chemical reaction so that it completely bonds with the layer below. I’m sure that this will not start to fall apart over time like electrical tape does.