The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5965-00-060-0090
NSN 6135-00-377-9165
NSN 5996-01-400-3558
NSN 5910-01-423-8223
NSN 6145-00-945-7473
NSN 6105-01-413-3065
NSN 2925-00-497-7808
NSN 6220-00-053-1807
NSN 5920-01-357-0997
NSN 5985-00-296-3822
NSN 6650-00-834-9062
NSN 5965-01-467-2071