The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5990-01-517-1909
NSN 6220-01-322-6424
NSN 6150-01-408-4662
NSN 2925-01-156-4335
NSN 6130-00-837-3748
NSN 6105-00-127-2993
NSN 5915-01-177-1766
NSN 6240-00-105-4328
NSN 6610-00-104-8223
NSN 5999-00-824-2106
NSN 6135-01-463-7077
NSN 6650-01-290-1029