The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6145-01-627-7605
NSN 6240-00-255-2159
NSN 5990-01-500-5412
NSN 5999-00-427-0914
NSN 6685-01-492-6556
NSN 6645-01-654-9639
NSN 5945-01-534-3664
NSN 5895-01-530-9842
NSN 5930-01-145-1156
NSN 5855-01-534-6802
NSN 5935-01-062-3924
NSN 4140-00-008-8750