They are hermetically sealed for transport.
After inspection the opium is hermetically sealed in tin-lined boxes containing about 150 lb.
An Atmos clock consists of a hermetically sealed capsule that contains ethyl chloride, which is a combination of gas and liquid that expands and contracts according to the temperature, forcing air through the mechanisms inside.
The cavity of the pitcher is in some species lined throughout with a smooth glistening surface over which glands are uniformly distributed; these glands secrete a liquid which is found in the pitcher even in the young state while it is still hermetically closed by the lid.
These are then hermetically closed, and left for a few hours for the gum to ferment and loosen.
