The sealing rings and locks of the airlock are subject to careful verification. Black rubber or gray silicone will be suitable for the circular joints. The heavy metal access door demands steel gray or light bronze.
Thematic : Astronaut
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Astronaut inspecting airlock seals before a major spacewalk coloring page
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Astronaut testing a new personal jetpack prototype
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Digital technical manual open on an orbital station console
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Sleeping bag attached to a bulkhead where an astronaut sleeps in zero-g
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