For oxygen mask pilot flight helmet sealed. You will get a sealed one.The item "NEW CRU-94/P terminal block oxygen mask pilot flight helmet sealed" is in sale since Monday, November 15, 2021. This item is in the category "Collectibles\Militaria\Surplus\Other Military Surplus". The seller is "cretanman" and is located in FPO, Armed Forces Europe, The Middle East, & . This item can be shipped worldwide.