The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6145-00-617-4032
NSN 5975-01-154-0074
NSN 5915-01-217-5277
NSN 6240-00-189-2762
NSN 6610-01-655-1559
NSN 5990-01-324-7529
NSN 5935-01-577-0478
NSN 5999-01-522-3295
NSN 6610-01-462-5980
NSN 4140-01-190-1023
NSN 5920-01-239-2038
NSN 5930-00-190-0295