| 摘要 |
An improved canister for preserving aroma of coffee or spices includes a hollow body and a cap sealing the body. An elastic disk sealing the canister is placed inside the canister under the cap. The disk has a major stationary portion and a minor movable portion. The cap, the body of the canister or the movable portion includes an element for pressing and bending the disk movable portion downwardly when the canister is capped. The disk movable portion is retracted back to its original sealing position when the canister is uncapped.
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