"DJM" wrote in message
...
Try xyol (xylene) the paint thinner. I was told by a Xerox repairman they
used it on copier rollers when they got hard.

I have used it and works for me.



Zippo lighter fluid apparently works too, my friend soaks hardened rubber
parts in it. When they get really bad there's not much you can do other than
replace them though.