Nextel® 312 Alumina/Silica/Boria Fiber (Al₂O₃62/SiO₂24/B₂O₃14)

Nextel® 312 Alumina Silica Boria Fiber (Al₂O₃62/SiO₂24/B₂O₃14) is a high‑temperature ceramic textile that stays flexible while other materials soften, oxidize, or shed particulates. It delivers reliable electrical insulation and clean handling in hot, complex assemblies where weight and space are tight. Aerospace, industrial processing, and composite manufacturing use it to build long‑life thermal barriers without the fragility of rigid refractories. Typical roles include furnace curtains and linings, door seals and gaskets, flexible couplings, and reinforcing layers in ceramic or polymer matrix laminates. The fiber’s low outgassing and stable chemistry make it comfortable around sensors, optics, and vacuum hardware, while its drape lets it conform to irregular geometries and fasteners. For research and production teams, it offers a practical path to thin, durable insulation that controls heat, protects adjacent components, and simplifies maintenance over many thermal cycles.