A spill-stopping device for a chemical drum featuring a boot assembly; a shroud with an aperture disposed on the first end of the boot assembly, the aperture is adapted to accept a shaft of a filling machine; a spout disposed in the second end of the boot assembly, the spout is adapted to snugly fit into chemical drum aperture in a lid of a chemical drum and accept a shaft of a filing machine; a double-door assembly pivotally attached in the spout via hinges, the double-door assembly can move between at least an open position and a closed position respectively allowing and preventing access to the spout from the boot assembly; and counterweights attached to each hinge and extending upwardly into the boot assembly, the counterweights function to bias the double-door assembly in the closed position.