The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6320-01-204-2922
NSN 5945-00-276-9274
NSN 6220-00-401-4648
NSN 2925-01-116-6838
NSN 6685-01-304-2122
NSN 6240-01-225-3862
NSN 2925-01-597-9541
NSN 6620-01-127-6306
NSN 5905-01-512-6168
NSN 6645-00-917-6225
NSN 5965-01-046-9619
NSN 5930-01-411-9752