The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 2925-01-197-7864
NSN 7035-00-104-7613
NSN 4140-01-640-6637
NSN 5930-01-004-8339
NSN 5965-00-566-4221
NSN 6145-01-332-0925
NSN 5960-00-492-2502
NSN 6130-00-592-5800
NSN 6240-01-237-5430
NSN 7035-00-541-8516
NSN 4140-01-332-4970
NSN 6150-01-064-5010