The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 4140-01-337-7695
NSN 4140-01-041-8896
NSN 5996-00-070-4315
NSN 2925-00-275-1807
NSN 5920-01-184-3195
NSN 5915-01-055-5643
NSN 5930-00-278-7731
NSN 6220-01-484-9035
NSN 6130-01-522-5158
NSN 7035-01-045-7202
NSN 6130-01-580-1339
NSN 5835-01-540-4995