Unless you're hoping for a high-street shop of some sort:

https://www.google.co.uk/search?q=liquid+electrical+tape+uk&biw=1920&bih=1017&source=univ&tbm=shop&tbo=u&sa=X&ved=0ahUKEwjT-uDM2vLKAhULHxoKHaUaApAQsxgIHw

Ok, I'll bite.

What are you making?

>>2097

Yeah high street. The only other stuff I found was overpriced on amazon.

>>2098

http://www.instructables.com/id/Fix-a-stripped-wire-on-your-headphones/

>>2099

M8, can I recommend heat shrink tubing?

http://www.maplin.co.uk/p/15mm-heat-shrinkable-sleeving-1m-bf86t

You just slide it over the affected area and blast it with a hair-drier, or a heat-gun. The plastic adheres to the broken wires.

>>2099

I'd be inclined to replace the entire length with some decent quality braided cable. Maybe stick a Neutrik jack on while you're at it.

>>2101
If you have decent soldering skills I second this. The Grados are meant to be fairly easy to get open.

I've got the SR80s too, and my cables are on the way out I think.

>>2102

>The Grados are meant to be fairly easy to get open.

They're glued together, but it's hot melt glue. Warm the cups with a hairdryer or in a vegetable steamer and they pop open easily, no tools required.

>>2096
WTAF is that stuff!

>>2104
Plasti Dip, dear.