The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 7035-00-104-7613
NSN 6650-00-084-4258
NSN 5960-01-317-3401
NSN 5996-01-044-6958
NSN 6620-01-398-8986
NSN 5950-01-319-7265
NSN 6130-01-106-3649
NSN 5975-00-153-0050
NSN 5835-01-133-6485
NSN 5855-01-359-0373
NSN 5835-01-449-7511
NSN 6145-01-283-5505