I recently saw "Green Slime" tyre sealant suggested as a product
to nurse along rubber cloth covered pneumatics for a few years when
the cloth has minor holes but is not splitting or turned to dust.
"Flex Seal" clear is also a product that can buy a few years use of
a player piano or organ until you have both time and money to do
a full recover with proper replacement material.

I have had good luck with the "Green Slime" for keeping air in
30-year-old bicycle tyres.  Has anyone had experience with _both_
of these products for comparison in mechanical musical instruments?

Does anyone have techniques to share (other than avoid breathing
fumes from "Flex Seal") that have worked for rubber cloth rejuvenation?
Is there a need for using talc to keep cloth from sticking to itself
with either product?

I am working on a 50-year-old Kimball Electramatic organ which has
rather small pneumatics, so minor leakage is a bigger problem with
small pneumatics on 13 inches of vacuum.

William Frisk
wcjfrisk@hotmail.com.geentroep [delete ".geentroep" to reply]