If you do any crimping of terminals (Ring, Quick Connect, Etc.) You may have come across parallel and double crimp profile options. What’s the difference?
Parallel a.k.a. Oval or Single: This crimp profile is generally used with heat shrink wrapped terminals and is the more common crimp profile. This profile does not penetrate the insulation and creates a watertight seal. This option, while preferred, is generally more expensive.
Double-Crimp: This option crimps down on both sides of the terminal and creates a winged look after the crimp is complete. As opposed to the alternative, this option can often penetrate the insulation but if a watertight seal is not needed provides a tighter crimp on nylon insulated terminals.