He should hsve used duck tape, it lasts longer.
I had a leak on the metal line for the master brake cylinder. I wrapped it with that black stretchy silicone tape just to get off the 4x4 road. Got to the asphalt and checked it - no leaks!
Got into a small town to maybe repair it - but still no leaks. Figured I could make it into my own town and repair shop.
A few months and a thousand miles later I did. Still no leaks! My mechanic couldn’t believe it. That it didn’t leak, and that I was such an idiot as to drive around with tape on my brake line!
That tape is amazing though - it seals to itself. I might have wrapped regular electrical tape around the silicone stuff just to make sure, and protect the silicone tape a bit.
I forget what they did, but there are videos of 4x4 guys fixing holes in their tires with the weirdest stuff.