The 3M™ Rugged Comfort Half Facepiece Reusable Respirator 6502 combines comfort, durability, and stability.The 3M Rugged Comfort Half Facepiece Reusable Respirator 6500 Series helps provide respiratory protection in harsh, dirty environments against airborne contaminants when used with approved 3M Cartridges and Filters. This facepiece is designed to help promote comfort, durability and stability with a firm, lightly textured silicone face seal, and strong body construction. While being the lightest silicone 3M Facepiece, it is still rugged enough to withstand long hours and extreme conditions. The resilient silicone faceseal offers an extended facepiece life, even keeping its shape in high-heat environments. When properly fitted and used with approved cartridges and filters, this respirator helps provide respiratory protection at concentrations up to 10 times the Permissible Exposure Limit (PEL).