Includes 6 Gas Can Spout Seals. Fits many standard plastic jerry can spouts, including 1, 2, 2.5, 5, 10, 20 gallon cans and 5 and 10 liter jugs/tanks. Compatible with Gasoline, Gasoline w/ Ethanol, 2-Stroke Oils, Diesel, Diesel Fuel Additive, Fuel Stabilizers, Kerosene, etc, for the longest lasting gas can seal available.