| 摘要 |
An upper stripper rubber canister apparatus has a canister body and a canister body lid. An upper end portion of the canister body includes a breech lock structure exposed within the canister body central passage. A lower end portion of the canister body lid is configured for fitting within the central passage of the canister body. The canister body lid includes a breech lock structure that is configured for allowing the canister body lid to be fixedly engaged with the canister body by inserting a lower end portion of the canister body lid into a canister body central passage and rotating the canister body lid with respect to the canister body such that at least a portion of the canister body breech lock structure become at least partially overlapped with a respective one of the canister body lid breech lock structure.
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