Alumina ceramic rings have excellent mechanical strength, high temperature resistance, wear resistance, corrosion resistance, good insulation performance and durability. 95/96/99 alumina zirconia ceramic rods, wear-resistant and high temperature resistant, good toughness, high density, used for resistors and other resistance ceramic rods. It has the advantages of long life, energy saving, environmental protection, safety, controllability and soon.
Due to its excellent electrical performance at high frequencies, it has low dielectric loss, high volume resistivity, high strength, high hardness, small linear expansion coefficient, and good wear resistance and heat resistance. It is more economical and practical to use 95% alumina ceramics in general occasions. 99% to 99.9% alumina porcelain is only used for occasions with particularly high performance requirements. In fact, the hardness of alumina ceramics is extremely high. Whether it is polycrystalline alumina ceramics or single crystal alumina ceramics, they all have high hardness performance of stainless steel, because the hardness of ceramics in brackets can reach that of stainless steel and stainless steel. More than nine times the enamel, so when our teeth are in contact with the ceramic brackets, the enamel will be worn away in a short period of time. Alumina ceramics are ceramic materials mainly composed of alumina, which are widely used in thick film integrated circuits. With excellent electrical insulation properties, it is used as an electronic ceramic for structural parts, substrates and housings in electronic equipment and devices. Porcelain parts of insulation devices include various insulators, coil bobbins, tube holders, band switches, capacitor support brackets, integrated circuit substrates and packaging shells, etc. Alumina electronic ceramics have high hardness, corrosion resistance, good high temperature resistance, and a wide range of applications. 
Advantages of alumina ceramic rings: 
Dimensional and thermal stability, high performance properties, hydrolysis resistance, self-lubricating properties, extended service life, reduced downtime and cost, low moisture content, noise reduction