[Monochron]

Originally Posted by cadandcookies

You're looking for polyurethane tubing: http://www.mcmaster.com/#catalog/122/3601/=10rmz4b

Goes up to 2.5" ID.

I believe it was AdamHeard who had a spreadsheet for what VexPro pulleys you could put it around to make wheels.

Thanks that's exactly what I was looking for. Urethane tubing "without the "poly" returns a much smaller subset of IDs.

And the other suggestions of gum rubber are great, thanks for that as well.