4 NASA had no way of testing on earth that the spacesuits, command module, lunar lander or anything would function at the vacuum level present on the lunar surface. (media.conspiracies.win) posted 1 year ago by MOCKxTHExCROSS 1 year ago by MOCKxTHExCROSS +5 / -1 18 comments download share 18 comments share download save hide report block hide replies
Materials start to off-gas at extremely low pressures. This is actually how many high-tech coatings are applied.
You can't have the material that is sealing against the vacuum off-gassing. Eventually there will be no seal.
Most vacuum tubes incorporated materials to combat offgassing. Meaning, the condition was well known. I assume space designers took this into account in selecting materials and designing sealant boundaries.