Steatite & C221 High-Frequency Steatite Ceramic Tubes – Stable Insulation for Electrical and High-Frequency Circuits

Steatite & C221 High-Frequency Steatite Ceramic Tubes – Stable Insulation for Electrical and High-Frequency Circuits

Steatite ceramic tube is a classic general-purpose insulating ceramic widely adopted in electric heating, wiring terminals and low-to-medium-voltage equipment. Sintered from refined talc raw materials, it features good heat resistance, solid dielectric performance and outstanding cost efficiency. It stably works under 800°C continuous temperature, resists aging, moisture and weak chemical corrosion, with smooth precision inner holes for easy wire threading. Standard single-hole, multi-hole short sleeves and long straight tubes are all in stock, perfect for common tubular heaters, furnace wiring insulation and ordinary terminal insulators.

For high-frequency, high-voltage precision electronic scenarios, C221 High-Frequency Steatite Ceramic Tube features an optimized material formula that delivers superior high-frequency loss performance. Compared with regular steatite, C221 maintains ultra-low dielectric loss under high-frequency alternating current, avoiding signal attenuation, heat buildup and breakdown in high-frequency coils, radio frequency components, sensor assemblies and high-frequency heating equipment. It retains all advantages of standard steatite: rigid mechanical strength, non-flammable property, excellent thermal shock resistance and dimensional accuracy after precision firing.

Both series support custom outer diameter, inner bore, length and multi-hole layout per drawings. Whether you need economical general insulation or specialized high-frequency electronic insulation, our steatite ceramic tubes deliver consistent, reliable long-term performance for your electrical devices.