The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5998-00-079-1375
NSN 5930-01-309-6864
NSN 5910-01-368-8810
NSN 5915-00-948-1415
NSN 6320-01-578-6006
NSN 6650-01-406-5322
NSN 6320-00-456-0836
NSN 6685-01-127-7266
NSN 6320-00-036-3688
NSN 5996-01-188-7934
NSN 6130-01-130-8051
NSN 6685-01-017-8365