The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6220-00-053-5599
NSN 6320-01-397-9995
NSN 6145-01-381-2529
NSN 6130-00-862-5516
NSN 5990-00-003-4464
NSN 5855-00-237-4088
NSN 5835-01-163-4215
NSN 5960-01-512-0233
NSN 2925-00-111-4097
NSN 6620-01-388-4266
NSN 6645-01-463-3441
NSN 5910-01-263-5858