The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 4140-01-307-3143
NSN 5950-01-645-6811
NSN 5960-00-334-4954
NSN 5910-01-609-2801
NSN 6105-01-243-3678
NSN 6220-00-284-3220
NSN 5990-00-202-5127
NSN 5935-00-157-1198
NSN 5905-00-155-4767
NSN 6130-00-277-7321
NSN 6645-01-053-3185
NSN 6135-01-159-3032