The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5905-01-145-2812
NSN 5996-01-058-3156
NSN 6145-01-283-5505
NSN 5935-01-287-2357
NSN 5835-00-111-3419
NSN 5835-01-441-4746
NSN 5998-00-218-1360
NSN 6105-01-231-2366
NSN 6650-00-375-6632
NSN 5945-00-757-4335
NSN 5945-00-201-9456
NSN 6145-00-588-0794