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Wear-Resistant Alumina Ceramic Rings

Wear-Resistant Alumina Ceramic Rings

High-purity Ceramic Rings Designed To Resist Abrasion, Corrosion, And Impact.

Wear-resistant alumina ceramic rings offer excellent hardness and corrosion resistance, making them ideal for lining and sealing in abrasive environments.

Wear-Resistant Alumina Ceramic Rings

High-purity Ceramic Rings Designed To Resist Abrasion, Corrosion, And Impact.

Wear-resistant alumina ceramic rings offer excellent hardness and corrosion resistance, making them ideal for lining and sealing in abrasive environments.

Wear-resistant alumina ceramic rings are precision-engineered components made from high-purity aluminum oxide (Al₂O₃). These ceramic rings are known for their outstanding hardness (Mohs > 9), low wear rate, and excellent chemical stability, making them ideal for use in the most abrasive and corrosive environments.

These rings are widely used as liners, spacers, bushings, or sealing elements in high-wear industrial applications such as mining, power generation, cement, and chemical processing. They are especially effective in systems involving high-velocity particulate flow, such as pneumatic conveying or slurry pipelines.

With strong resistance to acid, alkali, and thermal shock, alumina ceramic rings can maintain their performance in temperatures up to 1,500°C. Their dimensional precision and mechanical strength also allow them to be installed in tight tolerance assemblies, helping to extend the service life of equipment and reduce unplanned maintenance.

Available in various sizes, thicknesses, and hole patterns, Sunny Steel offers customizable alumina ceramic ring solutions to match specific operational requirements.
Ceramic Performance Parameters
Properties
性能
Units
单位
Cordierite
堇青石
Mullite
莫来石
95% Alumina
氧化铝
99% Alumina
氧化铝
99.5% Alumina
氧化铝
99.7% Alumina
氧化铝
Silicon Nitride
氮化硅
Zirconia
氧化锆
Color
颜色
-YellowWhiteWhiteLight YellowLight YellowLight YellowBlackWhite
Density
密度
g/cm³1.92.62.63.63.83.93.26.0
Flexural Strength
抗弯强度
MPa301202002503503758001100
Compressive Strength
抗压强度
MPa350500250028002800255426003000
Elastic Modulus (20°C)
弹性模量
GPa40100300350360357290320
Max Operating Temp.
最高使用温度
°C12001300140015001500176013001050
Thermal Conductivity
热导率
W/m·K1.3–1.82–620303033–38253
Thermal Expansion
热膨胀系数
10⁻⁶/°C2.5–3.02.5–3.0588.28.2310
Thermal Shock Resistance
抗热震性
ΔT °C300150140150200223600250
Dielectric Strength
击穿强度
kV/mm--15181823.42515
Dielectric Constant
介电常数
εr8899.29.29.84926

Typical Applications

Alumina ceramic rings are engineered to perform in extreme wear, corrosion, and thermal environments across a wide range of industries

Pump Components

Applied in plungers, pistons, and sealing rings to handle abrasive slurries and fluids.

Mechanical Seals

Deliver long-lasting sealing performance in rotating equipment such as mixers and compressors.

Valve Seats & Discs

Improve the lifespan of valves in chemical, petrochemical, and water treatment systems.

Bearing Systems

Used in high-load, high-speed bearing applications where low friction and long life are required.

Cutting & Grinding Tools

Integrated into industrial cutting, lapping, and polishing tools to increase wear resistance.

Insulating Rings

Serve as electrical insulators in high-voltage and high-frequency assemblies.

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