Oxidized polyacrylonitrile (OPAN) fiber, such as Pyron® fiber, is designed for cost-effective, flame- and heat-resistant solutions in textile, industrial, aircraft and automotive markets. OPAN fiber performance features include: high Limiting Oxygen Index values, unsurpassed flame and heat dimensional stability, easy processing, soft, drapeable fabrics, non-conductivity, excellent chemical resistance, no halogens and very low toxic gas emissions.