The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5998-00-719-7610
NSN 5935-01-463-7674
NSN 5945-01-613-0187
NSN 6610-01-422-9508
NSN 6645-01-257-2856
NSN 5985-01-392-8337
NSN 6130-01-275-8872
NSN 6110-01-571-5321
NSN 5945-00-544-9183
NSN 5965-01-512-2895
NSN 6610-01-608-2899
NSN 5905-01-284-1356