The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5965-01-359-0059
NSN 6110-01-432-8264
NSN 5990-01-181-9886
NSN 6620-00-930-5680
NSN 6220-00-412-2741
NSN 5975-01-364-1666
NSN 2925-01-619-4825
NSN 6240-01-064-2980
NSN 2925-01-178-0063
NSN 6220-00-295-2468
NSN 5910-00-789-1206
NSN 6240-01-252-9374