The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6685-00-303-3283
NSN 5999-01-223-4675
NSN 6135-01-658-7467
NSN 6105-01-391-7722
NSN 5945-01-410-7778
NSN 5925-00-296-8123
NSN 2925-01-408-6205
NSN 5920-01-534-4942
NSN 6645-01-560-3034
NSN 5930-01-304-6124
NSN 5930-01-183-2185
NSN 6650-01-396-8890