The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6620-01-175-2084
NSN 6150-01-355-1606
NSN 5990-01-322-9781
NSN 5998-00-015-3703
NSN 6130-01-146-4221
NSN 6240-00-080-2012
NSN 5945-01-378-7172
NSN 5965-01-151-9816
NSN 5998-01-095-8171
NSN 5910-01-423-5802
NSN 5965-01-005-0341
NSN 5985-00-205-9568