This is total crap.
Why is duct tape called duct tape.
It is silver and called duct tape because it was originally used at joints of heating and cooling ductwaork to stop air leaks that reduced the efficiency of the heating and cooling systems.
Over the years it has often gotten called duck tape just because of the similar sound.
But if you look carefully it says duck tape brand duct tape.
A variation is heat resistant foil tape useful for sealing heating and cooling ducts produced because the adhesive on standard duct tape fails and the synthetic fabric reinforcement mesh deteriorates when used on heating duc.
Duct tape is used in the heating air conditioning industry to join and seal metal duct work hence the name.
Originally it was called duck tape because of its waterproof abilities but the name was forgotten and changed to duct tape because it was originally silver like the ducts that it repaired.
After that duct primarily took over as the widely accepted appellation and it remains so today.
There are a variety of constructions using different backings and adhesives and the term duct tape has been genericized to refer to different cloth tapes with differing purposes.
It came in silver not green and was not used in wwii to waterproof ammunition cases.
So duct tape is the answer except for the fact that tape manufacturer manco now shurtech.
Duck in this sense comes from the dutch word doeck which means linen cloth.
This was when the color changed from army green to silver to match the color of the ductwork.
Following this time the tape supposedly began to be called duct tape but the first mention of duct tape wasn t until 1960 and the new york times didn t call it duct tape until 1973.
There is even a brand of duct tape called duck tape.