Can Something Be Watertight but Not Airtight

Air molecules are smaller than water molecules. It does not allow water molecules to pass.

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I was eager to put my stash in there too.

. Does watertight mean airtight. Something that is watertight does not allow water to pass through it for example because it is tightly sealed. New comments cannot be posted and votes cannot be cast.

They CAN be forced through under high pressure. It is possible to have a seal that is watertight but not gas-tight particularly in a pressurised container - fluids are generally so much more dense and viscous than gases that they can get stuck in spaces where gases can be forced through. There are constituents of air that are smaller than water molecules so presumably there is a hole size that will permit some.

It is possible to have a seal that is watertight but not gas-tight particularly in a pressurised container - fluids are generally so much more dense and viscous than gases that they can get stuck in spaces where gases can be forced through. On the other way around watertight things are not completely airtight because as I mentioned before some gas particles in our air are smaller than the ones of water. Just because you cant smell something doesnt mean its airtight If water can seep out something its obviously isnt sealed from leaks so therefore it cant be airtight.

There are also some plastics that are gas permeable to some gases but not water permeable. I did some research so it turns out that anything that is airtight is watertight because some types of gas in our air have smaller particles than water particles. Airtight will also be watertight Watertight may.

Damn good look out. That said water vapor is a constituent of air so something that is truly 100 airtight is also watertight. But watertight airtight.

That said water vapor is a constituent of air so something that is truly 100 airtight is also watertight. Water molecules are larger than air molecules and water is also more dense and viscous so you could certainly have something that is water tight but not air tight. This is why something can be waterproof yet not airtight.

If it is not airtight then water vapor water in its gas phase can enter it just like air. It does not allow water molecules to pass. If something is watertight but not airtight can you still condense water from the air.

There are also some plastics that are gas permeable to some gases but not water permeable. If you then cool off the object to below the dew point water vapor will condense to liquid inside the object. As has already been pointed out in comments this is not necessarily true in the other direction.

You can dive into a pool without filling up with water and yet you can still fart underwater. This thread is archived. Your asshole is a good example of something that is watertight and yet not airtight.

So airtight watertight.

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