We don’t believe that polyurethane would be a good choice for immersion use in gasoline, especially if the gasoline containsethanol. Most reference material suggests using nylon or Kynar for gasoline and ethanol enhanced gasoline. We would strongly suggest that you test the product(s) to make sure they work in your application and we would be happy to send you a one foot samples for evaluation. Just let us know which size you need, where it needs to ship and your UPS or FedEx account number for the freight.