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Introduction to Factory Refractory 95% 96% 99% Aluminum Oxide Al2O3 Alumina Ceramic Tube / Sleeve / Bush
Alumina ceramics are known for their high hardness, wear resistance, corrosion resistance, good electrical insulation and high temperature stability. According to the different alumina content, it can be divided into different grades, such as 95 porcelain, 99 porcelain, etc., among which 99 porcelain refers to ceramic materials with an alumina content of 99%. As the alumina content increases, its mechanical strength and electrical insulation properties will also increase accordingly.
Characteristics of Factory Refractory 95% 96% 99% Aluminum Oxide Al2O3 Alumina Ceramic Tube / Sleeve / Bush
High Hardness: Alumina ceramics have extremely high hardness, which makes it very wear-resistant and suitable for manufacturing abrasive tools and parts that require wear resistance.
Wear resistance: Due to its high hardness, alumina ceramics show excellent wear resistance and are suitable for manufacturing parts for long-term use.
Corrosion resistance: Alumina ceramics have good resistance to most acids and alkalis, making them widely used in the chemical industry.
Good electrical insulation: As an excellent electrical insulating material, alumina ceramics are widely used in electronic and electrical products.
High temperature stability: Ability to withstand extremely high temperatures without significant physical or chemical changes, which makes it an ideal choice for applications in high temperature environments.
Biocompatibility: In the medical field, certain grades of alumina ceramics are used to make medical devices such as artificial joints due to their good biocompatibility.

(Factory Refractory 95% 96% 99% Aluminum Oxide Al2O3 Alumina Ceramic Tube / Sleeve / Bush)
Specifications of Factory Refractory 95% 96% 99% Aluminum Oxide Al2O3 Alumina Ceramic Tube / Sleeve / Bush
Our factory makes alumina ceramic tubes, sleeves, and bushes. These parts use aluminum oxide, called Al2O3. We offer three purity levels: 95%, 96%, and 99%. Higher purity means better performance generally. These ceramic parts are extremely hard. They resist wear very well. They handle very high temperatures. The maximum service temperature is about 1700 degrees Celsius. This makes them perfect for hot environments. They also resist chemical attack well. Acids and alkalis usually don’t damage them. Their electrical insulation is good. These features make them reliable in tough conditions. The alumina ceramic has high strength. It keeps its shape under pressure. Its thermal stability is excellent. It won’t crack easily from sudden temperature changes. The surface is very smooth. This reduces friction. The hardness is about 9 on the Mohs scale. That’s nearly as hard as diamond. These tubes, sleeves, and bushes are dimensionally stable. They won’t warp much over time. We control the production process carefully. This ensures consistent quality. You find these parts in many industries. They are used inside kilns. Furnaces use them too. They work well in high-temperature machinery. Electrical applications need their insulation. Chemical plants use them for corrosion resistance. They are also used in labs. Their mechanical strength is important there. These alumina ceramic products last a long time. They need less replacement than metal parts. This saves money over time. You can choose different sizes. We make custom shapes sometimes. The 99% purity is the top grade. It offers the best properties. The 95% and 96% are cost-effective choices. They still perform very well for many jobs. These ceramics are inert. They won’t react with most materials. They are safe for food processing sometimes. Their low thermal conductivity is useful. It helps control heat flow. These parts are machined precisely. They fit perfectly into assemblies. They provide reliable insulation barriers. Their high dielectric strength is valuable electrically. They withstand thermal cycling repeatedly. This means heating and cooling many times. They maintain performance throughout their life. Consider alumina ceramic for demanding applications. It handles heat, wear, and chemicals better than many metals. It offers a stable solution. Our products meet strict industrial standards. They are proven in real-world use.

(Factory Refractory 95% 96% 99% Aluminum Oxide Al2O3 Alumina Ceramic Tube / Sleeve / Bush)
Applications of Factory Refractory 95% 96% 99% Aluminum Oxide Al2O3 Alumina Ceramic Tube / Sleeve / Bush
These alumina ceramic tubes and sleeves handle tough jobs. They are made from aluminum oxide powder. The purity levels matter. You get 95%, 96%, and 99% Al2O3 options. Higher purity usually means better performance. These parts are very hard and resist heat extremely well. They also fight off wear and chemicals.
Factories use them where heat is intense. Think furnaces, kilns, or ovens. The alumina tubes guide thermocouples. They protect sensors inside hot zones. Sleeves act as liners for furnace parts. They stop heat from damaging metal parts. Bushings support shafts or rollers in hot spots.
These ceramics are tough against abrasion. They are harder than many metals. In machines with moving parts, they last longer. Use them as wear guides or liners. They reduce friction and protect surfaces. They are good for parts that slide or rub.
Alumina is an electrical insulator. It stops electricity from flowing. Use these tubes in electrical systems. They insulate wires or heating elements. They are safe in high-voltage areas. They don’t conduct electricity even when hot.
These parts resist many chemicals. Acids and bases often don’t harm them. This makes them useful in chemical plants. They work well in aggressive environments. They won’t rust like metal parts.
The 99% Al2O3 is the best performer. It handles the highest temperatures. It is the strongest and most resistant. The 95% and 96% options are very good too. They cost less and work for many uses. Pick the purity based on your specific needs. These tubes and sleeves are strong solutions for demanding factory work. They are reliable under pressure.
Company Introduction
Advanced Ceramics founded on October 17, 2014, is a high-tech enterprise committed to the research and development, production, processing, sales and technical services of ceramic relative materials and products.. Since its establishment in 2014, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.
Our products includes but not limited to Silicon carbide ceramic products, Boron Carbide Ceramic Products, Boron Nitride Ceramic Products, Silicon Carbide Ceramic Products, Silicon Nitride Ceramic Products, Zirconium Dioxide Ceramic Products, Quartz Products, etc. Please feel free to contact us.

Payment Methods
T/T, Western Union, Paypal, Credit Card etc.
Shipment Methods
By air, by sea, by express, as customers request.

5 FAQs of Factory Refractory 95% 96% 99% Aluminum Oxide Al2O3 Alumina Ceramic Tube / Sleeve / Bush
These alumina ceramic tubes come in 95%, 96%, and 99% purity levels. They are made mostly from aluminum oxide (Al2O3). This material is very hard. It handles high temperatures well. It also resists wear and chemicals effectively.
What are these alumina ceramic tubes?
They are tubes, sleeves, or bushings made from aluminum oxide ceramic. The numbers (95%, 96%, 99%) show the Al2O3 content. Higher purity usually means better performance.
Why does the purity percentage matter?
Higher purity alumina ceramic is harder. It withstands higher temperatures better. It is more resistant to chemical attack. It wears down slower. A 99% tube performs better than a 95% tube in tough conditions. Choose the purity based on your specific needs.
Where are these ceramic tubes used?
You find them in many industrial settings. They work well as protective sleeves for thermocouples in furnaces. They are good insulators in electrical applications. They act as wear-resistant liners or bushings in machinery. High-purity versions suit semiconductor manufacturing equipment.
How hot can they get?
These tubes handle very high temperatures. Lower purity tubes (95%, 96%) are fine for use up to about 1600°C. The 99% purity tubes can withstand even higher temperatures, often up to 1750°C or more. Check the exact specs for the grade you select.
Do they resist chemicals?
Yes, alumina ceramic has good chemical resistance. It stands up well against many acids and bases. It is particularly resistant to molten metals and slags. This makes it suitable for foundries and metal processing.

(Factory Refractory 95% 96% 99% Aluminum Oxide Al2O3 Alumina Ceramic Tube / Sleeve / Bush)
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