The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5990-00-223-5938
NSN 5905-01-418-4417
NSN 5996-01-398-0037
NSN 5999-01-096-1678
NSN 6220-01-030-7338
NSN 5835-01-302-6844
NSN 5985-01-450-3056
NSN 5905-01-445-4735
NSN 4140-00-864-1710
NSN 5999-01-150-1030
NSN 5935-00-842-6510
NSN 5960-00-180-4613