patched tears in my shop-vac's 4" hose...kept a pin in place on a spinning chuck on my lathe...sealed leaky doors in winter...held powers cords down across an aisle at a craft show....and 47 other uses..

AND....back in college, I worked for the Building & Grounds dept. as a student flunky...and I actually helped the Air conditioning crew...*SEAL DUCTS!*..yep...I taped ducts!.....