"Liquid Tape" by a company called "Plasti Dip", or 3M's 14853 "Electrical 
Coating". I haven't used Liquid Tape, personally, but we used CASES of the 
3M stuff on all the wiring makeups for Luxor Las Vegas outdoor tree lighting 
retrofit some 10+ years ago (awful job), and it's apparently still working 
fine. Stinky stuff until it cures, though.

On 9/5/05, Barrett Willet <barrettw@nventure.com> wrote:
> 
> Does a product exist that acts like liquid electrical tape for
> resealing cracks in wiring insulation? I've come across so many
> places where electrical tape is too hard to wrap or places where I
> can't slip heat shrink over because of a large connector.
> I once tried Seam Sealant for sealing tent seams on a crack but it
> didn't seem to last.
> Would be cool if there was some way to "dab" on something to seal
> things up.
>