The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6645-01-409-2003
NSN 6130-00-426-0058
NSN 5905-01-432-0481
NSN 5855-00-237-4088
NSN 4140-01-534-0903
NSN 6130-00-955-1743
NSN 5960-01-074-8964
NSN 5915-01-364-2251
NSN 5965-01-145-3732
NSN 6620-01-065-8265
NSN 6620-01-315-2414
NSN 5915-01-418-3639