3M 8293 P100 Respirator:
Use the 3M 8293 P100 respirator for protection from solid and liquid particles including oily substances. Respirator works when grinding, working with lead, or situations where arsenic or cadmium are present up to 10X the OSHA PEL. This 3M respirator features adjustable straps, 3M Cool Flow™ Exhalation Valve, advanced electret media, standard noseclip and a conformable foam faceseal.
More information: https://www.conney.com/product/3m-8293-p100-respirator-exhalation-valve-each