This short guidance explains that CPR masks typically do not carry a printed expiration date, while outlining practical replacement and inspection expectations. Masks are warranted for 18 months, with a recommendation to replace them after about three years regardless of condition, and immediately if they become wet or contaminated. It shows how to check the plastic shield and the seal around the center valve for cracks or pulling away, and suggests sampling stored masks after 12 months then every six months, with more frequent checks for issued, carried masks. Use this note to set inventory review routines for CPR and rescue masks before classes or field deployment.
Item #: MCRKEY-G-10
