I have repaired many hoses, such as the hose on my pump sprayer, with silicone tape aka rescue tape or Bubba tape. I have also used it to repair a leaking water line in a previous motorhome. It is pliable, can cut to size, stretches, and easy to use and will only stick to itself. I highly recommend it and there is no doubt it will permanently repair a small leak in the Sanicon hose.
Silicone Tape
Featured snippet from the web
Elastic, self-fusing silicone tape without adhesive, which bonds with itself and is suitable for various quick repair tasks. Allows for the repair of pipes, wires, hoses and other damaged surfaces around which it is possible to wrap stretched tape under pressure so that the substrate remains undamaged.Jul 31, 2019
Cheers

Barry T