Until you are able to get one try to superglue or epoxy your old one together. They will last a while glued together. Maybe that will hold you over until you are able to get a new one. You could order one from Utmost or getBit. Good luck and tight lines.
I went to ace hardware and found a vacuum belt that was almost the same size. It was a little smaller, but i heated it a little and stretched it. Works way better because its thick and fits the grooves better.