i'm a Handyman & often use self-amalgamating tape for electrical insulation, waterproofing etc. This is the most common commercially available product in this category & it performs quite well. I recommend storing your roll in a zip-seal packet though
because when it becomes dirty or dusty it has to be cleaned (with water) before use to ensure a good, reliable result.
This tape is amazing. I once had to stop at a fuel station because one of my car's rubber radiator pipes was worn and was leaking. I used this to wrap around the pipe and it kept everything in order till I could get to my dad's house and he could replace
the pipe for me. Heat resistant as well.
this is definitely a product every home should have, we were on a flight to holiday in the ever so beautiful Cape Town, whist unpacking our laggage we noticed my daughters vanity kit gave way, luckily my husband always carries the necessary in his DIY
travel kit. all we needed was a little Sillicon tape to the rescue and the box was back in working order... definitely a product to have at home and for travelling :)