Abstract: A fuel container having an upper cylindrical neck in which is inserted a stopper. A tube projects through the stopper through which a wick projects providing an upper loop with free ends projecting into fuel in the container. The upper end of the tube is crimped holding the upper looped end at a projected point above the end of the rod. The stopper is made of a material that when contacting a suitable fuel, such as a hydrocarbon or the like, will expand inwardly and outwardly sealing the space between the stopper and the outer cylindrical sides of the upper neck of the container and inwardly against the tube. A cap is provided for fitting against the upper end of the stopper sealing the wick from the atmosphere.