2300 N95 2 Strap Particulate Respirator with Exhale Valve, Disposable, Half Face, Small ORS NASCO corrosion and galling where high corrosion and galling where high temperature conditions exists Contains a high percentage of micro fine copper flakes in a semi synthetic grease carrier Fortified with high quality rust and corrosion inhibitors For heavy duty sweeping of concrete Exhale valve lets workers breathe easy and stay cool Dura Mesh® shell resists collapsing in heat and humidity Molded nose bridge seals easily without a metal noseband Facepiece is naturally contoured for less pressure Straps are securely attached so they don’t break at the seal