3M 40mm GOST(NATO) adapters
Description
This is a bunch of adapters for 3M masks and russian masks that allow to use 40mm filters on 3M and vice versa. Need to be used with rubber rings for best tight.All parts should be printed with supports (better remove supports from thread than ruin the thread) and double mount contain some undeletable supports, that help filtration a little. Use it on your own risk. https://grabcad.com/library/3m-full-face-respirator-1 - credit to creator of this model for making precise 3m mount.
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