The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6130-01-273-7427
NSN 6105-01-232-1749
NSN 5999-01-441-3101
NSN 6220-01-281-6027
NSN 5920-01-426-6666
NSN 6685-01-413-1505
NSN 6130-00-548-2952
NSN 6145-00-238-2623
NSN 5985-00-248-4978
NSN 5965-00-303-9701
NSN 6110-01-633-9660
NSN 6130-01-057-9184