An electrical crimp is a type of solderless electrical connection. Crimp connectors are typically used to terminate stranded wire. ... A well-engineered and well-executed crimp is designed to be gas-tight, which prevents oxygen and moisture from reaching the metals (which are often different metals) and causing corrosion.
Crimp (electrical) - Wikipedia
https://en.wikipedia.org/wiki/Crimp_(electrical)
nuff said LOL