The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5905-01-418-1017
NSN 6135-00-128-1633
NSN 5998-01-081-2167
NSN 5915-01-500-7008
NSN 6135-01-039-2882
NSN 6650-01-421-0838
NSN 6240-00-249-6259
NSN 6220-01-388-4420
NSN 5835-01-508-2528
NSN 6240-01-498-4719
NSN 6620-01-043-5169
NSN 5990-01-440-7135