The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5998-01-454-3285
NSN 5935-00-412-1095
NSN 5895-01-608-6300
NSN 5996-01-144-1561
NSN 6145-01-566-4795
NSN 5895-01-214-1902
NSN 6650-00-246-3751
NSN 5905-00-177-7833
NSN 5930-00-141-5975
NSN 7035-00-135-4758
NSN 5996-00-231-9322
NSN 5999-00-906-8541