In the 1970s, Goodyear Aerospace in Litchfield Park, Arizona, United States, used a gun with a ceramic diaphragm to seal the compressed air in the tank from the gun's barrel.
seal | Seal | Lord Privy Seal | Seal Beach, California | Lord Keeper of the Great Seal | The Seventh Seal | Seal (musician) | Seal Beach | Great Seal of the United States | Great Seal | Thoracic diaphragm | seal hunting | Seal (device) | Weddell seal | The Seal of Neptune | The Seal Cub Clubbing Club | Seal of the President of the United States | Seal Island | RCA Red Seal Records | Kevin Seal | Imperial Seal of Japan | Acharya Brojendra Nath Seal College | This Could Be Heaven (Seal song) | Seal of the Confessional | Seal of San Francisco | Seal of California | Seal Island, Nova Scotia | Seal hunting | Seal (emblem) | SEAL |