The most durable oil hose on the market. Your oil tank is double skinned, so why not your oil line? These hoses have a 5-year Manufacturers warranty and a 10-year end of life from the date stamped on the crimp and is tested in accordance with ISO-6806. The hose must not be kinked or stretched. EOGB Ruby Red hoses are tested and suitable for Kerosene and Gas oil liquid fuels conforming to BS 2869:2017 and biofuels blends including FAME and HVO to 100% Suitable for all burners that match the thread size