The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6130-01-092-2667
NSN 4140-01-112-6492
NSN 2925-00-081-3547
NSN 5910-01-412-1397
NSN 6135-00-209-6918
NSN 5895-01-478-4588
NSN 6110-00-305-1276
NSN 5895-01-339-7149
NSN 5975-01-183-5060
NSN 5999-01-293-1994
NSN 6135-00-913-2062
NSN 6685-01-487-6001