The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6135-00-191-6444
NSN 6135-00-269-5843
NSN 5920-01-400-3562
NSN 5975-00-372-1415
NSN 5835-01-268-1924
NSN 5998-00-269-5444
NSN 6150-01-201-3041
NSN 5998-00-541-8593
NSN 5835-00-083-3014
NSN 5920-01-271-9140
NSN 5895-01-184-0209
NSN 6645-01-486-1139