How to seal the MacBook charging wire?

Question

Do it yourself

Tape does not hold, slips after a week of use.

Answer 1

Here people got confused with a heat shrink tube. I put the connector through it, pretty stretching it.
video

Answer 2

Self-vulcanizing tape?

Answer 3

As an option - pour with a hot glue gun and gently roll out to take a cylindrical shape - while still hot.
I recommend trying it on a test cable.

Answer 4

cut the wire, put on heat shrink (several pieces), solder the wire back, seat the heat shrink one by one on top of each other.