Exceptional Heat Resistance & Durability: Withstands extreme temperatures and rapid thermal shock, ideal for high-heat applications like kilns, furnaces, and thermal processing equipment. Resists corrosion and chemical degradation for long-lasting performance. Superior Electrical Insulation: Provides excellent dielectric strength and electrical isolation, making it perfect for insulating heating elements, thermocouples, electrical components, and high-voltage applications. Versatile Industrial & Laboratory Use: Essential component for a wide range of uses including thermocouple protection sheaths, sight glasses for high-temperature viewing, flow guides, structural supports in harsh environments, and scientific experiments. High-Strength & Chemically Inert Material: Crafted from robust alumina or similar ceramics, offering great mechanical strength and stability. Non-reactive surface ensures purity in sensitive processes and is safe for various industrial fluids and gases. Precise Dimensions & Consistent Quality: Available in various diameters, lengths, and wall thicknesses to meet specific project requirements. Manufactured to tight tolerances for reliable and predictable performance in demanding applications. M2 M3.5 M4 M5.5 M6.3 Ceramic Spacer Washer Gasket High Temperature Resistant Insulating Alumina Ceramic Tube Sleeve