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It’s not going to get a good seal. Not on anyone. CPAP masks are a good example of what you can do to get a decent seal with a hard plastic, but they take a lo
by bradknowles 7y ago
It’s not going to get a good seal. Not on anyone.
CPAP masks are a good example of what you can do to get a decent seal with a hard plastic, but they take a lot of trial and error to get right, and there are hundreds of different models on the market.
You have to address the sealing issue first. If you don’t, then nothing else really matters — unless you’re just making vibrantly colored cloth masks to help encourage you to stop touching your face and to scare others into staying far away from you.
- robomartin 7y agoIn the video I saw they seem to have added a gasket material to the edge. Yes, you are right, getting a good seal with a hard plastic is difficult (unless you impale it into your skin). I wonder how carefully they adjust their N95's to have a good seal? If you don't, particularly at the nose bridge, you can have some pretty big gaps.
- DanBC 7y agoFor anyone interested, here's a video of a junior doctor in England testing his FFP3 mask fitting. https://youtu.be/7XZ2_xSHKMw?t=555 https://youtu.be/7XZ2_xSHKMw?t=555