The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6685-01-235-3996
NSN 6150-01-540-2372
NSN 6240-00-445-4765
NSN 5930-01-412-5154
NSN 6150-01-393-4476
NSN 6240-00-446-3700
NSN 5935-01-537-0095
NSN 5835-01-112-9008
NSN 6220-00-062-7029
NSN 5910-01-645-7757
NSN 6685-01-454-4007
NSN 6135-01-151-2705