The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5920-01-401-5315
NSN 6645-01-028-2186
NSN 6320-01-170-4068
NSN 5895-00-475-2806
NSN 5905-01-018-0827
NSN 6220-00-334-7008
NSN 6150-01-433-1497
NSN 5915-00-186-9346
NSN 6150-00-168-3934
NSN 5945-01-628-3666
NSN 5935-01-200-2827
NSN 6240-01-228-6289