I just got them so haven't tested the durability but the material is better and should be much easier to tighten a stretchy strap on these without messing with the staples. I opened the staple and reaffixed it but not great and the extra stress on the elastic obviously makes it more prone to snapping in use.Īnyway, I just bought some 9210+ which has an elastic vs rubber band strap. I tried to tighten the 9205 strap by tugging it through the staple. I don't think I even got 15 hours on my first 9205 because the on/off wears the elastic. I usually only wear a mask for an hour or so at a time and with Powecoms I can easily get 40 hours though I would need to tighten the head straps with a wee knot or a silicone strap adjuster. Really like the fit of the 9205 but the straps are garbage. I've used 3M N95 masks for over a decade, and suddenly the straps are nowhere near what they were pre-pandemic." Questions for youĪ.) In your experience, how many times can you reuse a 3M Aura 9205+ mask and still get a good seal?ī.) How do you know that you still get a good seal? Pre-stretch, re-stretch, i've tried it all and there's no way to get better performance or longevity. Regarding a different N95 mask with flimsy headbands, the 3M 8210, 3M writes: "Pre-stretch around entire length of each strap by pulling at 3cm intervals between both hands."Īgain regarding the 3M 8210, one reviewer responds: "The straps for these masks are made of a thin barely-elastic rubber strip that fails so quickly and consistently that I have to assume it was engineered to do so. I start to lose seal after two shifts with those while my powecoms actually fit better on day 2." Pre-stretching the straps on the 3M 8210 Regarding the 3M Aura 9205+, /u/thatjacob adds: "The headbands on those are kind of terrible if you take the mask off more than once or twice. u/jjcityscenes writes that, compared to the 3M Aura 9210+, the 9205+ has "rubber band straps which are not as durable/can break easily if re-used". Unfortunately, even if the user seal check seems to pass, this isn't a perfect guarantee that the mask still fits you well. If you feel a gush of incoming air around one of the edges of the mask, something's wrong. If you feel a slight vacuum inside the mask, this is good. ![]() To do this, breathe in suddenly and sharply. Misuse may result in sickness or death." How to do a user seal checkĮvery time you put an N95 mask on, it's good to do a "user seal check", to help verify that it's on correctly. "If you cannot achieve a proper seal, do not enter the contaminated area. The official tip sheet for 3M Aura N95 masks notes: A well-fitting N95 mask can protect you better than most other masks.
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