The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6320-01-462-3555
NSN 5835-00-594-4921
NSN 6105-00-088-6321
NSN 6650-01-323-2141
NSN 2925-01-423-4962
NSN 5835-01-242-9806
NSN 5910-01-327-8747
NSN 2925-00-895-9215
NSN 5930-01-580-7757
NSN 6650-01-444-1321
NSN 5925-00-941-0317
NSN 6110-01-577-2571