Extreme heat. In these chalenging conditions, you need safety equipment that stands up to the heat, keeps your workers comfortable - and makes a tough job easier. Engineered to withstand radiant heat loads up to 190 °C (375 °F), our NEW 3M™ Elevated Temperature Hard Hat H-700T is the foundation of an integrated system of advanced personal protection equipment. The H-700T hard hat is designed specifically for elevated temperature applications ranging from metalworking and smelting to glass manufacturing. The new design and materials offer lightweight protection (less than 380 g) while the use of existing head suspensions provide proven comfort, security and adjustability. H-700T Series hard hats are built using injection molding technology. This allows us to offer you an elevated temperature hard hat that is lighter weight, more comfortable and versatile - at a competitive price.