The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5990-01-311-3710
NSN 5895-01-212-4501
NSN 6685-01-515-8743
NSN 5910-00-291-3955
NSN 5945-01-194-3676
NSN 5996-01-417-3139
NSN 5905-00-523-2783
NSN 7035-00-521-4319
NSN 6320-01-062-9351
NSN 5905-00-720-8019
NSN 5930-00-205-2945
NSN 5930-01-504-5289