The bag valve mask resuscitator (Ambu Bag) doesn't have a specific shelf life but we recommend that you should consider updating your BVM after 5+ years from its manufactured date. The manual resuscitator should be stored in dry place. The storage temperature is -40 ℃~ +60 ℃. The user should consider the condition of ambu bag before using it. Winner silicone manual resuscitator has shelf life of 5 years and PVC manual resuscitator has shelf life of 3 years.