The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5996-00-166-0037
NSN 5855-00-118-8762
NSN 6240-00-072-9966
NSN 5965-01-534-9961
NSN 5998-01-529-6962
NSN 2925-01-374-2402
NSN 5920-00-488-9359
NSN 5895-00-235-8510
NSN 6110-01-623-4216
NSN 5915-01-067-9470
NSN 6645-00-007-5305
NSN 5990-01-442-3520