The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5985-01-065-1675
NSN 6135-01-033-3213
NSN 5998-01-606-2553
NSN 5925-01-245-8648
NSN 5905-00-104-5963
NSN 5930-01-449-2593
NSN 5920-01-460-3509
NSN 5855-01-522-4143
NSN 6645-01-336-3647
NSN 6220-01-458-0909
NSN 5855-01-394-7125
NSN 5915-00-114-0089