Alumina Ring，Alumina Ceramic Ring
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Product number |
GGS-0-A1 |
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Size |
custom made |
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Material |
Alumina |
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Purity |
99.8%、99%… |
∗The specifications in the table above are typical for oxidized rings. We can customize advanced ceramics in different sizes according to the drawings you provide.
Introduction of Alumina Ceramic Ring
Alumina ceramic rings are round ceramics made from alumina (Al2O3) through various processing techniques. Our Alumina ring has super high wear resistance and corrosion resistance.
We provide customized services for you based on the drawings you provide. During the customization process, we have a professional team to solve your doubts 24 hours a day. The process of customizing products is transparent and visible. If you have any needs, we can report the customization progress to you in real time.
If you need to customize high-quality Alumina rings, please be sure to contact us. We can provide you with a different service experience.
Superior Production Technology of Alumina Rings
We pay attention to the processing of products, and we strive for perfection in every processing step.
In the process of processing alumina ceramic rings, we grind alumina into submicron (nano) level powder. After actual measurement, the particle size of alumina after sintering can be less than 5 microns. Alumina ceramic rings are composed of these tiny particles. There are almost no pores in the ceramics we produce, and the density is about 3.9 g/cm3 , which creates excellent mechanical strength of alumina rings.
Usage Classification of Alumina Rings
There are many types of alumina ceramic rings, which are more specifically divided into sealing rings, insulation rings, wear-resistant rings, support rings, etc.
Sealing ring: Sealing ring is mainly used in equipment that requires tight sealing. Our alumina ceramic ring is resistant to high temperature (withstanding high temperature above 1600℃), with simple appearance design and excellent sealing effect, which can keep your equipment in a tight sealing environment.
Insulating ring: Alumina has excellent electrical insulation. Our alumina insulating ring is designed with special cuts and functions, which can be cut into suitable equipment, provide excellent electrical insulation performance, effectively prevent current leakage, and protect your electrical equipment.
Wear-resistant ring: The biggest feature of alumina wear-resistant ring is high hardness and strong wear resistance (alumina has a hardness comparable to diamond). The alumina wear-resistant ring we produce can be used in various harsh high-wear environments with confidence.
Support ring: Support rings usually have unique shapes and some special additional structures. The additional structure can provide good support. Our alumina support rings can be well used in machinery or support structures.
How to choose alumina ring with appropriate purity
Normally, the higher the purity, the better the performance of the alumina ring,The common alumina purity range is 92~99.9. We can customize alumina ceramics of various purity and sizes for you.
- 95% alumina rings have low cost, moderate hardness and strength, and are suitable for medium-strength scenarios, such as general wear-resistant parts.
- 99% alumina rings have a high hardness and can be used in higher-intensity application scenarios, such as chemical equipment that requires little chemical corrosion, or electronic devices and high-temperature furnaces.
- Alumina ceramics with 99.5% or above have extremely high hardness and strength, as well as excellent electrical insulation and high temperature resistance. Can be used in high-end electronic devices and precision medical equipment.
- Ultra-pure alumina is an alumina ceramic with a purity >99.9%. This ceramic has almost no impurities and has excellent mechanical properties and chemical stability. It is used for high-end technology research and scientific experiments, such as semiconductors, optical instruments and nuclear industrial manufacturing.
What sizes are our Alumina Ceramic Rings available in?
If the following sizes cannot meet your needs, we can provide you with customized services, please be sure to contact us!
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Size Category |
Inner Diameter (ID) |
Outside Diameter (OD) |
Thickness |
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small size alumina ring |
10 mm - 50 mm |
20 mm - 100 mm |
1 mm - 5 mm |
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Medium size alumina ring |
50 mm - 200 mm |
100 mm - 300 mm |
5 mm - 20 mm |
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Large alumina ring |
200 mm - 500 mm |
300 mm - 800 mm |
10 mm - 50 mm |
Main parameters of alumina ceramic rings
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project |
condition |
Performance parameters |
unit |
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95 |
99 |
|||
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Bulk density |
– |
≥3.65 |
≥3.85 |
g/cm3 |
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Air tightness |
– |
qualified |
qualified |
– |
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Flexural strength |
– |
≥280 |
≥300 |
MPa |
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Average linear expansion coefficient |
25℃~500℃ |
7~7.5×10-6 |
7~7.5×10-6 |
1/K |
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25℃~800℃ |
7~7.5×10-6 |
7~7.5×10-6 |
1/K |
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Dielectric constant |
1MHz |
9~10 |
9~10.5 |
– |
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（10±0.5）GHz |
||||
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Dielectric loss tangent |
1MHz |
≤3×10-4 |
≤4×10-4 |
– |
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（10±0.5）GHz |
≤6×10-4 |
≤6×10-4 |
– |
|
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Volume resistivity |
25℃ |
≥1×10-14 |
≥1×10-14 |
Ω.cm |
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300℃ |
≥1×10-11 |
≥1×10-11 |
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Breakdown strength |
D．C |
≥20 |
≥30 |
KV/mm |
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Average grain size |
– |
10~20 |
8~16 |
μm |
∗The data in the above table are obtained by testing under specific conditions, and the data may be different under different test conditions. The properties of custom alumina parts will vary depending on the purity and process selected. We can customize the alumina ceramic ring products you require based on the drawings you provide.
Aluminum oxide ring uses:
Alumina rings are widely used in various fields.
- Insulation materials
- Baseboard materials
- Bearing seals
- Laboratory equipment
- Thermal protection materials
- Structural materials
- Induction heating elements
- Liquid handling equipment
Why choose us?
We have a professional advanced ceramic production factory with more than 15 years of production experience.
Our products are certified by 2011/65/EU RoHS international standards;
Our alumina rings are strictly treated in every process during the production process to ensure product quality at all times.
For high-precision ceramic products, we achieve the smallest and most reasonable tolerance.
We have rigorous after-sales service. If the product is damaged or missing during transportation, we will replenish the missing products. For serious product quality problems, we will also actively communicate with you to compensate or explore the best solution.
Some products do not have a minimum order quantity. You are welcome to call us for inquiries. If you need free samples of alumina rings, please contact us.
Package
We carefully package each product for you to prevent the goods from being damaged during transportation. We ensure that the aluminum oxide rings delivered to you are of high quality and complete.
Partial product display
Disclaimer: Based on our own production experience, we show you some basic parameters of typical alumina ceramic ring products measured under specific conditions. These values are for reference only when designing ceramic components. Depending on the customization conditions, the parameters and specifications of the alumina ring will be slightly different.
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product name |
Image |
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Material purity: 96% alumina Inner diameter: 10 mm - 100 mm Outer diameter: 20 mm - 150 mm Thickness: 1 mm - 20 mm Customized products
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Material Purity: 96% Alumina Inner Diameter: 10 mm - 100 mm Outer Diameter: 20 mm - 150 mm Thickness: 1 mm - 20 mm Customized products
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Material Purity: 96% Alumina Inner Diameter: 5 mm - 75 mm Outer Diameter: 10 mm - 100 mm Thickness: 1 mm - 15 mm Customized products
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Material purity: 96% - 99% alumina Diameter: 10 mm - 150 mm Thickness: 5mm - 20 mm Customized products
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Material Purity: 95% - 99% Alumina Inner Diameter: 5 mm - 100 mm Outer Diameter: 10 mm - 150 mm Length: 10 mm - 200 mm Customized products
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Material purity: 96% alumina Inner diameter: 10 mm - 100 mm Outer diameter: 20 mm - 150 mm Thickness: 1 mm - 20 mm Customized products
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| Alumina ceramic seal ring
Material purity: 96% alumina Inner diameter: 5 mm - 75 mm Outer diameter: 10 mm - 100 mm Thickness: 1 mm - 10 mm Customized products
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| Insulating alumina industrial ceramic small parts
Material purity: 95% - 99% alumina Size: customized according to customer requirements Customized products
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| CNC machined aluminum ceramic water pump seals
Material purity: 99.5% alumina Inner diameter: 5 mm - 75 mm Outer diameter: 10 mm - 100 mm Thickness: 1 mm - 10 mm Customized products |
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| Alumina Insulated Ceramic Tube Rings
Material Purity: 95% - 99% Alumina Inner Diameter: 5 mm - 100 mm Outer Diameter: 10 mm - 150 mm Length: 10 mm - 200 mm Customized Products |
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| 95 Alumina Ceramic Rings for Electrical Industry
Material Purity: 95% Alumina Inner Diameter: 5mm-75mm Outer Diameter: 10mm-100mm Thickness: 1mm-15mm Customized Products
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| CNC machined alumina ceramic rings
Material purity: 96% - 99.5% alumina Inner diameter: 5 mm - 75 mm Outer diameter: 10 mm - 100 mm Thickness: 1 mm - 20 mm Customized Products |
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| CNC machined alumina ceramic rings
Material purity: 96% - 99.5% alumina Inner diameter: 5 mm - 75 mm Outer diameter: 10 mm - 100 mm Thickness: 1 mm - 20 mm Customized products |
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| CNC machined aluminum ceramic ring gasket
Material purity: 96% - 99.5% alumina Inner diameter: 5 mm - 75 mm Outer diameter: 10 mm - 100 mm Thickness: 0.5 mm - 10 mm Customized products |
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| Industrial insulator aluminum ceramic ring
Material purity: 95% - 99% alumina Inner diameter: 5 mm - 75 mm Outer diameter: 10 mm - 100 mm Thickness: 1 mm - 20mm Customized products |
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| Industrial grade 96% alumina ceramic hole seal ring custom processing
Material purity: 96% alumina Inner diameter: 5mm-100mm Outer diameter: 10mm-150mm Thickness: 1mm-20mm Customized products |
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