99.5% Thermostability Alumina Al2O3 Insulating Disc Part Sheet Board. High Alumina Content: Made with 99% to 99.5% pure Alumina (Al2O3) for superior insulation. Thermostability: Withstands high temperatures up to 1400 degrees Celsius. Customized Dimensions: Available in customized sizes, shapes, and colors to fit specific needs. High Wear Resistance: Features excellent hardness and durability for long-lasting performance. Corrosion Resistant: Inorganic insulation material resistant to chemical corrosion. ISO9001 Certified: Manufactured under strict ISO9001 quality management standards. Polished Edges: Edges are professionally polished for smooth finish and safety. Excellent Insulation: High volume resistivity greater than 10^12 Ohm.cm ensures safety.