Cleaning and Repairing my Old AO Safety Respirator

https://youtu.be/y_8o4Gl2gPU

CISONE Knit Elastic 3/4 Inch Wide Black Heavy Stretch High Elasticity Knit Elastic Band 10 Yards (Amazon Affiliate)
US: https://amzn.to/39uZj9x
CA: https://amzn.to/38BvmG7