The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6145-01-487-3773
NSN 6650-00-150-6885
NSN 6105-01-066-0330
NSN 5920-01-409-2830
NSN 5905-00-273-9789
NSN 5925-00-270-6005
NSN 6685-01-310-6642
NSN 5960-01-082-2119
NSN 5990-00-706-8962
NSN 6610-00-073-8038
NSN 5996-01-196-0017
NSN 5835-00-471-2660