Thomas Edison. Thomas Alva Edison (February 11, 1847 â October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb.
Pipe dope, or pipe joint compound, is a gooey compound used to seal the connection between threaded pipes and fittings. Because the threads in pipes and fittings still leave an air gap between the two surfaces, the gap must be filled to make it water tight (or gas tight for gas lines).
Greg shows how to apply the teflon pipe thread so that it DOES go on easy and in the right direction, and doesn't unravel when you insert the pipe into the recptical. Teflon tape is appropriate for pipe connections where the pipe is tapered.In these types of connections, the pipe threads make the seal.o quote wikipedia.com: Commonly known as  Teflon tape, PTFE tape, tape dope, or  plumber's tape â is a polytetrafluoroethylene (PTFE) film cut to specified widths for use in sealing pipe threads. The tape is wrapped around the exposed threads of a pipe before it is screwed into place.