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Also, there are various forms of conductive rubber available. Typically this is done by mixing carbon powder into the rubber.

https://en.wikipedia.org/wiki/Conductive_elastomer

This summary doesn't give numbers, but the journal article being discussed does. About 3e3 to 1e4 S/m for different preparations, compared with zero for untreated silk. Performed as a two-probe DC measurement, so once you factor in contact resistance it might be even better. The details are scarce, so you'd probably want to see it repeated more carefully before concluding anything.

What is a kragagooogle ?

The only google results come back here, so I'm guessing it's a place holder word for "a lot", like a bajillion.

"kraga" appears to be a swedish word meaning "flange", so hopefully that clears things up.

Google guesses Icelandic for me, which apparently translates as "collar".

Seems obvious in retrospect.