Sip Valve Washer

This is a washer to hold a sip valve onto an N95 mask.

I got my sip valves in bulk here: https://www.webstaurantstore.com/tablecraft-1sv-clear-valve-for-invertatop-squeeze-bottles/8081SV.html

I use coffee stir straws to fit through the squeeze valve. I've drilled a hole in a small water bottle to make a drinking bottle that works with this valve.

To install on an N95 mask, put the mask on and mark a good place for a straw. Cut a hole slightly smaller than the raised squeeze valve circle. Push the squeeze valve through the hole. Install the 3D printed washer on top of the squeeze valve to secure it to the mask.