The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6645-00-803-6417
NSN 5990-00-087-6177
NSN 5965-01-127-3890
NSN 6240-01-231-9243
NSN 6105-00-886-0529
NSN 5975-01-505-5218
NSN 5935-01-427-3822
NSN 6135-00-152-8729
NSN 6240-01-131-4454
NSN 5945-01-146-4529
NSN 5905-01-646-6870
NSN 6685-00-725-3958