The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6105-00-275-0826
NSN 5960-01-120-6523
NSN 6110-01-461-2631
NSN 6220-00-262-0017
NSN 6150-01-285-0107
NSN 5895-00-902-1415
NSN 6135-01-461-2567
NSN 5925-01-180-0082
NSN 5925-01-407-7070
NSN 5998-01-561-0964
NSN 5950-01-367-4516
NSN 5975-00-011-2403