SEA Full Face Gas Mask Respirator Army Military Riot. A Group Gas Mask Respirator, in the original container. The SEA full mask is a panoramic full view mask. It is designed to protect the respiratory system and face against hazardous gases and particles and to maintain a wide field of vision. Vacuum sealed cartridge marked “Use before 9/2023″. The item shown in the photograph is the exact one you will receive. Pease note all images of ACTUAL item, these are part of the item description.