<blockquote>
<p>Are there any simple solutions I can implement out there?</p>
</blockquote>
<p>A gasket made of rubber or other elastic or deformable material is probably the best option. Printing one or both of the parts using a deformable material like TPU might also work. Finally, if you don't need to open the unit during the experiment, you could use a sealant like silicone caulk might make sense.</p>

CC BY-SA 4.0
2021-04-23T17:25:59.503Z
Or a garden hose o-ring.
Davo
CC BY-SA 4.0
2021-04-24T01:38:20.460Z
@caleb How about the air that is in before it is closed. is there a way to force it out?
Anwar Elhadad
CC BY-SA 4.0
2021-04-24T19:20:15.187Z
@AnwarElhadad You could fill and close the device in an inert gas environment, like nitrogen, CO2, or argon. Or you could add a valve that lets you pump the air out after filling. I’m not sure that a FDM printed part would hold a vacuum — you’ll need to test that and perhaps take steps to seal the inside.
Caleb
CC BY-SA 4.0
2021-04-23T16:47:00.527Z
2021-04-23T16:47:00.527Z
Caleb
<p>I am creating a bottlecap-like design. The design is sealed by rotating the lid. I am adding a chemical to it for an experiment. I would like the inside of the design to have no air circulating to it through the lid tiny spaces.</p>
<p>My design:</p>
<p><a href="https://i.sstatic.net/2Xc1Q.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/2Xc1Q.png" alt="enter image description here" /></a></p>
<p>Are there any simple solutions I can implement out there? Design-wise, material-wise, or maybe an extra piece?</p>

CC BY-SA 4.0
2021-04-24T06:29:24.307Z
Are you talking about sealing design or porosity of the objects when printed (it looks like the final sentence above the image hints to that)?
0scar
<3d-design>
How to create an air-free design?
Anwar Elhadad
# How to create an air-free design?

(Asked by: username_0 on 2021-04-23)

I am creating a bottlecap-like design. The design is sealed by rotating the lid. I am adding a chemical to it for an experiment. I would like the inside of the design to have no air circulating to it through the lid tiny spaces.

My design:

[![enter image description here](https://i.sstatic.net/2Xc1Q.png)](https://i.sstatic.net/2Xc1Q.png)

Are there any simple solutions I can implement out there? Design-wise, material-wise, or maybe an extra piece?

**Tags:** 3d-design
> **Comments:**
> **username_1**: Are you talking about sealing design or porosity of the objects when printed (it looks like the final sentence above the image hints to that)?  

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## 1 answers

### Answer by username_2 on 2021-04-23. Score: 2 | Accepted answer

> Are there any simple solutions I can implement out there?

A gasket made of rubber or other elastic or deformable material is probably the best option. Printing one or both of the parts using a deformable material like TPU might also work. Finally, if you don't need to open the unit during the experiment, you could use a sealant like silicone caulk might make sense.

> **Comments:**
> **username_3**: Or a garden hose o-ring.  
> **username_0**: @caleb How about the air that is in before it is closed. is there a way to force it out?  
> **username_2**: @AnwarElhadad You could fill and close the device in an inert gas environment, like nitrogen, CO2, or argon. Or you could add a valve that lets you pump the air out after filling. I’m not sure that a FDM printed part would hold a vacuum — you’ll need to test that and perhaps take steps to seal the inside.  

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