Ropes and braids of different diameters for “extreme” uses at very high temperatures (up to 1400 ° C). Flexible and lightweight, they are suitable for gaskets and sealing systems. Nextel 3M fabrics, ribbons, wires and sheaths are composed of continuous polycrystalline metal oxide fibers with filaments between 10 and 12 μm based on sol-gel technology. Designed to meet the thermal, mechanical and electrical requirements and used for various applications including industrial, petrochemical, aerospace and aerospace applications. Quickly and easily applicable.