It is important to segregate incompatible wastes to avoid chemical reactions or explosions. Store drums properly indoors, or in a weather-protected area outside. Funnels can be left in place on the drums.

Drum faucets, funnels, vents, tip-over protection and more

Drum funnels intended for use with flammables are fitted with a brass flame arrester that absorbs and dissipates heat, preventing any external ignition source (like sparks from power tools, static electricity or cigarettes) from reaching the drum's flammable contents. Heavy 18-gauge galvanized steel, with an electrostatically applied epoxy powder-coat finish, provides durability and chemical resistance. Self-close models have a fusible link that melts at 165ºF (74ºC) shutting the cover automatically in case of a fire to extinguish the flames.