The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6685-01-023-7514
NSN 6645-00-004-8628
NSN 5985-01-332-0316
NSN 6650-01-556-6941
NSN 6150-00-007-1774
NSN 5945-01-160-7894
NSN 5855-00-361-0167
NSN 5990-00-501-4994
NSN 5945-01-215-6714
NSN 5975-00-222-3516
NSN 5895-01-357-6932
NSN 6150-01-228-9121