The file 'TPU Rubber Belt Stock (8mm X 12mm X 38cm) 3D Printer Model' is (stl) file type, size is 77.9KB.
I needed some custom-sized rubber belt stock to make treads for some tea-cart wheels I built so I tried printing some stock belt using TPU. It worked quite well. If you choose 100% infill it's relatively solid but flexible enough to roll out. I don't have any tools to measure the hardness, so I can't say what the shore hardness is. I was able to form a loop by cutting it to the needed length, and then joining the two ends by heat welding them together using an SMD hot air soldering station.
TPU_Rubber_Belt_Stock.stl | 306.0KB |