Yes - on cars ! Fixed marine fuel hose should be marked with "ISO 7840" on the outside - there are lots of sellers who possibly not knowing the difference will sell you automotive fuel hose for the same price.
"ISO 7840:2004 specifies general requirements and physical tests for fire-resistant hoses for conveying petrol and diesel oil, designed for a working pressure not exceeding 0,34 MPa for hoses with nominal bore up to and including 10 mm and 0,25 MPa for hoses with larger bore in craft of hull length up to 24 m.
ISO 7840:2004 applies to hoses for small craft with permanently installed fuel systems. It does not apply to hoses entirely within the splash well at the stern of the craft connected directly to an outboard engine."
I found some at http://www.chandleryworld.co.uk/acat...O7840A1A2.html
and on eBlag along with lots of black cotton braided stuff. Given that there was virtually no different in price, I just went for the marine specification.