| 摘要 |
A barrel lock sleeve for snap-mounting in a keyway aperture of a door for use in lockably blocking the keyway for security purposes. The sleeve is fixed in the door aperture by the insertion and locking of a conventional barrel lock within the sleeve. The sleeve includes means for permitting the outside diameter of a forward portion of the sleeve to be resiliently compressed so that the sleeve can be snapped into the door aperture.
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