Recently bought a tube of super glue to fix something, and I started wondering how it stays a liquid inside of the tube/bottle and doesn’t just stick to the sides?
In: Other
Superglue hardens by reacting with the air. When you put the cap back on air doesn’t get in the tube and so it doesn’t harden.
If you don’t close the cap fully then the entire tube goes solid (in reality the cap will never quite be perfect so this will happen eventually anyway).
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