Mask, Oxygen


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

Type A-8B Oxygen Mask

Standardized in 1940, the Type A-8 oxygen mask was similar in design to the Type A-7 mask but covered the nostrils and mouth. The Type A-8B differed from the A-8 in having two exhaust posts set on either side of the nose instead of one on the main line. It also had space for a microphone. The Type A-8B continued to be used from many years after World War II.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum

Credit Line

Donated by the Sierra Engineering Co.


  • Mask and Bag: Rubber
  • Mask Strap: Elastic Nylon
  • Hose: Rubber


Size: Medium

Country of Origin

United States of America

Physical Description

United States Army Air Forces continuous or demand flow oxygen mask; green rubber mask with green rubber rebreather bag; two inhalation and exhaltion valves below nose of mask; cavity between valves for internal microphone; black rubber oxygen hose; green elastic straps over mask; green nylon neck strap. use at altitudes up to 30,000 ft .


EQUIPMENT-Breathing Devices

Inventory Number