The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6150-01-246-4050
NSN 6105-01-235-3727
NSN 6320-01-519-8767
NSN 6685-00-218-1229
NSN 6610-00-912-3964
NSN 4140-00-528-2921
NSN 5855-00-138-2386
NSN 5945-01-509-3033
NSN 5975-01-020-2266
NSN 6135-01-313-8323
NSN 6220-01-526-6858
NSN 5835-01-622-2556