Welding respirators protect welders from dangerous gases and fumes. Half facepiece respirators can fit underneath welding helmets. They typically filter out 99 percent of particulates. Full facepiece welding respirators consist of a welding helmet and integrated respirator. They protect welders from harmful UV light, infrared light, welding debris, fumes, sparks and heat. Welding respirators are ideal for plasma cutting, grinding and welding applications.