The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6135-01-368-0960
NSN 6685-00-113-8949
NSN 6240-01-203-8829
NSN 2925-00-444-1186
NSN 5930-01-131-0763
NSN 6220-01-314-5896
NSN 5915-01-237-8680
NSN 5935-01-391-7821
NSN 5905-01-245-4060
NSN 5998-00-182-7130
NSN 6620-00-079-0311
NSN 5965-00-470-9521