Quote Originally Posted by pbromaghin View Post
Heck, everybody has a roll of duct tape laying around. Cost is zero.

Seriously, a layer, maybe 1/2 inch by whatever length, with the glue side out to cover the cable, and another layer, glue side in to attach to the good part of the wrapper at each end of the blowout, and you're in business.
I don't. But I do have heat shrink tubing, and what I would do is cut one piece to cover the break, shrink it, then put on another overlapping piece - that is, covering the first piece and a half or three quarters of an inch on each end of the healthy casing.