The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5998-01-336-3806
NSN 5930-01-447-3544
NSN 6650-01-411-1581
NSN 6645-01-252-9659
NSN 5999-01-414-6963
NSN 5835-01-392-7683
NSN 5905-00-433-3140
NSN 4140-01-653-9368
NSN 6320-00-937-5625
NSN 5996-01-438-0323
NSN 5975-00-909-2800
NSN 5855-01-270-6847