The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5965-01-005-6617
NSN 5990-00-777-0413
NSN 5925-00-842-2775
NSN 5930-01-368-7382
NSN 5855-00-288-1408
NSN 6110-01-003-9614
NSN 5998-01-495-8702
NSN 6220-00-001-2137
NSN 5925-01-024-9568
NSN 5965-01-150-1920
NSN 6220-00-451-8760
NSN 5920-01-053-9797