The 3M™ Versaflo™ Flame Resistant Faceseal, M 937 is a replacement part for 3M™ Versaflo™ M Series Headgear including the 3M™ Versaflo™ Faceshields and 3M™ Versaflo™ Respiratory Hard Hat, M 100 Series and M 300 Series. Made from flame resistant polyester, this face seal protects the wearer's face when doing hot work.