Quote from "Antique Electronic Supply".
CAIG, CAIKOTE 44 KIT - S-CK-CK44-G
Conductive Carbon Coating for most surfaces (rubber, epoxy, glass, plastic). It
is ideal for repairing membrane buttons,
keyboard buttons, and other carbon based surfaces. It may also be used as a
coating for shielding (EMI) of electronics.
$8.95
http://www.tubesandmore.com/
Ben.