COVID Filter MSA MASK adapter to RD40 1/7" and M45x3 threads
grabcad
UPDATE: 16/04/2020 Interior Part Redesigned (V2). Unnecessary Oring Grooves Removed, Round Corners Added. Narrowed Section Extended to One Side for Better Fit. This New Model Was Designed and Printed Specifically to Fit MSA Masks with RD40 1/7 Thread and M45x3 Thread, as Well as Filters. Only a 23mm x 2.5mm Oring Provides an Air-Tight Seal. Printed on a Resin DLP Printer, It Appears to Be Working Successfully. However, Its Performance on Standard FDM or Other Printers Is Unknown and Should Not Be Attempted Without Further Testing. Use at Your Own Risk.
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