The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 6240-01-085-2319
NSN 5835-01-314-2781
NSN 6105-01-367-0907
NSN 5965-00-894-0015
NSN 5975-01-457-8254
NSN 6320-01-162-5977
NSN 5910-00-481-1626
NSN 6645-01-333-7497
NSN 5895-00-823-9473
NSN 5905-01-422-7428
NSN 5925-01-046-7448
NSN 5930-01-310-9567