circular piece of elastic, flexible sheet material, inserted in a tubular formed roll in the opening of a bottle or container and held in place by its own elasticity or flexibility, which enables drip-free pouring of a liquid as a pouring spout with a sharp edge and prevents drops from seeping down from the opening of the bottle or container when pouring stops

Cartridges filled with chemical flavorings in liquid form for electric cigarettes or oral vaporizers