With bail-top jars this is done by pushing the snap down; with screw-top jars by screwing cover on tightly.
If screw-top cans are used, the tops should not be twisted or turned after cooling, as this may affect the sealing.
A moistener for postage stamps or envelopes can be easily made from a screw-top jar.
A flagon of white silver, flat beneath the stem, with a screw-top surmounted by a small lion; for cooling water.
He was also an inventor in a small way, and patented a screw-top for glass bottles.
Little Fuzzy studied it for a moment, then ran into the bedroom and came back with his screw-top bottle.