Couple of suggestions.

#1, get a thin layer of contact cement on the substrate and then dust it with powdered graphite. This should give you a conductive pad.
#2, get a cheap calculator (cost less than $10) from the import store, and shave a sliver or two off the pads under it's keys. The glue them onto you pads (correct side up of course) I know if several kids toys that may be a cheaper source of pads than calculators... eg: those tacky little mobile phone filled with lollies that play music.

Both of these suggestions are only that, so don't sue me if there's flaws in my reasoning.

Hope this helps,
Des

>>> Lee Jones <lee@FRUMBLE.CLAREMONT.EDU> 11/25/99 7:20:48 pm >>>
Hi all,

I'm looking for a small quantity of conductive coating to
repair a rubber membrane keypad.  I got some oil between
the rubber membrane and the PC board.  Alcohol cleaned off
the oil just fine.  But my overly vigorous scrubbing with
a Q-tip also removed the conductive coating on a few keys.

This is the style of keypad where there are interlaced
fingers on the printed circuit board.  Underside of each
key is a dome of rubber with a raised spot in the center.
The raised spot is coated with a conductive substance.
When the key is pressed, the conductive coating closes
the circuit by "shorting" the fingers together.

Anybody know if this conductive coating is available for
repair work?  If so, a vendor and part number would be
nice.  Or is this material the exclusive province of the
people who make rubber membrane keypads?

Thanks in advance.
                                                Lee Jones