Invented during WWII, this adhesive tape used a durable cotton canvas called duck cloth, which naturally repelled water like a duck's feathers.

Despite its name, standard duct tape should never seal HVAC ducts because the extreme temperature fluctuations quickly degrade the adhesive.

To survive dangerous carbon dioxide levels, the crew used duct tape to adapt square scrubber cartridges to fit the lunar module's round holes.

The middle layer is a woven fabric mesh called a scrim. Its intersecting threads allow the tape to tear cleanly by hand while providing high tensile strength.