The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6645-01-188-2918
NSN 6135-00-793-1809
NSN 5855-01-435-5548
NSN 6110-00-245-1814
NSN 6610-00-769-6826
NSN 6220-00-935-6881
NSN 6145-01-108-0150
NSN 2925-01-194-9737
NSN 5950-00-241-3467
NSN 6110-00-257-5199
NSN 5925-00-631-1078
NSN 6320-01-583-6809