The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5998-01-094-8614
NSN 6685-00-233-0736
NSN 6610-00-958-0294
NSN 6145-00-808-3537
NSN 5990-01-052-1987
NSN 6110-00-402-7637
NSN 6150-01-026-0913
NSN 6240-00-594-7138
NSN 5950-01-298-5178
NSN 5999-00-058-5475
NSN 5855-01-295-2313
NSN 5935-01-331-5985