| 摘要 |
Closure elements including a base sized and configured to substantially close a bore of a tubular member within which it is disposed are disclosed. At least one engagement feature resiliently movable from both at least a first position and at least a second position is carried by the base, wherein the at least one engagement feature is sized and configured to cooperatively engage an associated wall structure of a wall of a tubular member when it occupies the first position and disengage from the associated wall structure of the wall structure of the tubular member when it occupies the second position is disclosed. At least one of a locking structure and a biasing element are disclosed. Containers including at least one closure element are disclosed.
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