Flown International Space Station carbon dioxide scrubber gasket, removed and replaced during Expedition 38/39 by Astronaut Rick Mastracchio. A part of the equipment to remove CO2 from the ISS atmosphere and keep the astronauts alive, the gasket measures 7.5″ x 7.5″. In fine condition. Accompanied by a letter of provenance from Astronaut Rick Mastracchio. From the collection of astronaut Rick Mastracchio, who flew on STS-106, STS-118, STS-131, and Soyuz TMA-11M (Expedition 38/39).
