The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 4140-01-381-7286
NSN 6240-01-181-4474
NSN 6650-01-150-7552
NSN 5835-01-592-2350
NSN 6240-01-325-8901
NSN 5920-01-195-3859
NSN 7035-01-396-3343
NSN 6610-01-466-6338
NSN 4140-01-255-9276
NSN 5905-01-239-2009
NSN 5960-01-599-9821
NSN 5998-00-469-9798