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The BEST 21C is a 500-pack of core caps designed for use with BEST interchangeable core lock cylinders. Core caps serve as protective covers for the keyway or core opening on lock cylinders, maintaining the integrity of the locking mechanism when a core is not installed. These caps are a standard component in large facilities and institutional environments where interchangeable core systems are actively managed. Security professionals and locksmiths keep core caps on hand to protect cylinders during core rotation, rekeying cycles, or temporary removal. The pack quantity of 500 units suits high-volume operations and master key system administrators managing large hardware inventories.
Core caps are used in commercial and institutional settings wherever BEST interchangeable core cylinders are deployed, including schools, hospitals, government facilities, and office buildings. They are applied to cylindrical locks, mortise cylinders, and padlocks that accept BEST interchangeable cores. Facilities with active key control programs typically stock core caps in bulk to support routine maintenance and core rotation schedules.
Designed as an OEM-style accessory for BEST interchangeable core lock cylinder systems in commercial and institutional applications.
Core caps are installed and removed by qualified locksmiths or credentialed security personnel using a control key. Always follow the facility key control policy before removing or installing cores or caps. No special tools are required, but care should be taken to avoid forcing the cap into the cylinder housing to prevent damage to the keyway or core housing.
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