Durable FR 100% Cotton These fabrics are made flame-resistant by application of a flame retardant finish. 100% COTTON. 100% COMFORT. 100% FLAME RESISTANT. Excel-FR® cotton garments offer unbeatable protection for foundries, flame cutting and welding, as well as electrical utilities and the chemical, oil, gas and petrochemical industries. Among similar fabrics produced by the “ammonia cure” process are AMTEX® by Mount Vernon Mills, Inc., Banox Certified® by ITEX, Inc. and INDURA® by Westex, Inc. Click here to learn more about Bulwark Fabric Types.