ok, that looks to be simple ground driven brush requiring reverse rotation,prolly wouldn't hurt if it slipped occasionally.
FWIW as I posted earlier, on my old clothes dryer,
I needed a belt in a hurry ( Twins needing dry clothes) many many years ago.
We had a "make a belt kit @ work.
it was orange urethane in a roll of various diameters/sizes.
You cut off what you needed as far as length and the ends were put in a little jig, and nothing more than a Teflon coated soldering iron which heated the ends to be joined.
When they were hot enough to melt, the ends were pushed together and let cool for a minute and cleaned off the flash @ the joint.
It made a belt for my dryer that lasted over a year.
Sorry I cannot remember the name, but just throwing this out as an alternative if you cannot find something pre made that will work.
Today with Google a person can find a lot of things.
much like this:
http://www.durabelt.com/