Alumina Washer - Advanced Ceramics Hub

Author: Janey

Jun. 05, 2025

Alumina Washer - Advanced Ceramics Hub

Alumina Washer

Alumina Washer

Purity: 95%, 96%, 99%, 99.5%, 99.7%, 99.95%

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Alumina Washer is a high-performance ceramic material primarily made of high-purity aluminum oxide (Al2O3) through high-temperature sintering. It has high strength, good dielectric properties, wear resistance, high-temperature resistance, and corrosion resistance. As a leading supplier and manufacturer of premium alumina products, we can supply high-quality alumina washers with various specifications and competitive prices, offering customized solutions to meet specific requirements.

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Alumina Wahser Data Sheet

Alumina Washer

The Alumina Washer is made primarily from high-purity aluminum oxide with rare additives, sintered at a high temperature of ℃ to get the completely dense product. The molding process can vary depending on the product, with common methods including dry pressing and isostatic pressing. It possesses high-temperature resistance, high strength, excellent wear resistance, good electrical insulation, corrosion resistance, and chemical stability. Advanced Ceramics Hub can supply high-precision alumina washers with tight tolerances, offering customized solutions to meet diverse industrial and research requirements.

Alumina Washer Advantages

  • Excellent strength and stiffness
  • Extremely high hardness (Mohs hardness 9)
  • Outstanding wear resistance
  • Good resistance to acid and alkali corrosion
  • High-temperature resistance up to °C
  • Superior electrical insulation
  • Low dielectric constant and dielectric loss

Alumina Washer Applications

  • Mechanical Sealing: Alumina washers can serve as sealing gaskets in pumps or valves, offering wear and corrosion resistance.
  • Electronics Industry: Alumina washers can be used as insulating gaskets to isolate and support electronic components in high-temperature or high-voltage settings.
  • Chemical Equipment: Alumina washers can be employed as corrosion-resistant gaskets in pipelines or containers, resisting acid and alkali erosion.
  • High-Temperature Environments: Alumina washers can be utilized as insulating or supporting gaskets in kilns or heat treatment equipment.

Alumina Material Grades

  • Al2O3-99.95%
  • Al2O3-99.7%
  • Al2O3-99.5%
  • Al2O3-99%
  • Al2O3-96%
  • Al2O3-95%

It has a very high purity (99.95%) grade of Alumina (Aluminum Oxide) exhibiting an exceptional combination of mechanical and electrical properties. It features very high hardness, exceptional electrical resistivity, high-temperature mechanical stability and strength in addition to corrosion resistance and bio/chemical inertness.
Its high-temperature stability and electrical stability make it particularly suitable for high-temperature applications such as high voltage/frequency insulators, heating elements supports, etc

Physical Properties:
  • Color: White
  • Density: 3.98 g/cm3
Applications:
  • High-temperature electrical insulators
  • Very high voltage/frequency insulators
  • Machine components where high wear resistance
    is required in an oxidizing environment
  • Precision shafts in high-wear condition
  • Unlubricated (vacuum) or gas/water lubricated
    high speed sliding bearings
  • Shot blast nozzles
  • Abrasive flow deflector plates/cones
  • Valve seats
  • Wire guides

It’s a high-purity grade of Alumina (Aluminum Oxide) and one of the high-performance grades in this range of materials. It features a 99.7% purity Alumina base material that provides a superior set of mechanical and electrical properties while maintaining a reasonable cost. It is a very hard-wearing technical ceramic offering and is ideally suited to a wide range of industrial applications where mechanical and electrical performance is of the essence and the material needs to perform adequately in aggressive environments.
It can be machined in the “green state”- that is before sintering takes place, thus ensuring a large variety of shapes and sizes. It can also be diamond ground to tight tolerances in the fully sintered state using diamond grinding.

Physical Properties:
  • Color: Ivory
  • Density: 3.9 g/cm3

Applications:

  • Electronic components & substrates
  • High-temperature electrical insulators
  • High voltage insulators
  • Laser tubes
  • Machined components
  • Mechanical seals
  • Precision shafts and axles in high-wear environments
  • Roller and ball bearings
  • Seal rings
  • Semiconductor parts
  • Shot blast nozzles
  • Thermocouple tubes
  • Tap plates
  • Valve seats
  • Wear components
  • Wire and thread guides
  • Ballistic Armor

99.5% Purity Alumina is a high-performance engineering material with exceptional mechanical strength, high-temperature resistance, and excellent electrical insulation properties. It is widely used in industrial equipment, electronic components, medical devices, and aerospace applications.

Physical Properties:
  • Color: Ivory
  • Density: 3.9 g/cm3
Applications:
  • Electronic components & substrates
  • High-temperature electrical insulators
  • High voltage insulators
  • Laser tubes
  • Machined components
  • Mechanical seals
  • Precision shafts and axles in high-wear environments
  • Roller and ball bearings
  • Seal rings
  • Semiconductor parts
  • Shot blast nozzles
  • Thermocouple tubes
  • Tap plates
  • Valve seats
  • Wear components
  • Wire and thread guides
  • Ballistic Armor

99% Purity Alumina Is a premium industrial ceramic material with excellent mechanical properties, ultra-high hardness, high-temperature resistance, and insulation performance. It can maintain stable chemical and physical properties even in extreme environments, making it widely used in semiconductors, electronic components, laser technology, and aerospace.

Physical Properties:
  • Color: Ivory
  • Density: 3.85 g/cm3
Applications:
  • Electronic components & substrates
  • High-temperature electrical insulators
  • High voltage insulators
  • Laser tubes
  • Machined components
  • Mechanical seals
  • Precision shafts and axles in high-wear environments
  • Roller and ball bearings
  • Seal rings
  • Semiconductor parts
  • Shot blast nozzles
  • Thermocouple tubes
  • Tap plates
  • Valve seats
  • Wear components
  • Wire and thread guides
  • Ballistic Armor

It is a regular purity grade Alumina (Aluminum Oxide) and it is one of the workhorses of the technical ceramics industry. It features a 96% purity Alumina base material providing a balanced “cost to quality” ratio. It is a hard-wearing technical ceramic offering an excellent combination of both mechanical and electrical properties and is ideally suited to a wide range of industrial applications where cost is of the essence, but the material still needs to perform adequately from a mechanical and electrical standpoint.
It can be machined in the “green state”- that is before sintering takes place, thus ensuring a large variety of shapes and sizes. It can also be diamond ground to tight tolerances in the fully sintered state using diamond grinding.

Physical Properties:
  • Color: White
  • Density: 3.75 g/cm3

Applications:

  • Electronic components & substrates
  • High-temperature electrical insulators
  • High voltage insulators
  • Laser tubes
  • Machined components
  • Mechanical seals
  • Precision shafts and axles in high-wear environments
  • Roller and ball bearings
  • Seal rings
  • Semiconductor parts
  • Shot blast nozzles
  • Thermocouple tubes
  • Tap plates
  • Valve seats
  • Wear components
  • Wire and thread guides
  • Ballistic Armor

95% Purity Alumina is an economical and practical engineering material. Its slightly lower alumina content reduces production costs while maintaining decent wear resistance and processing flexibility. It is commonly used in mechanical parts, electrical insulators, and wear-resistant bushings, offering an excellent cost-performance balance.

Physical Properties:
  • Color: White
  • Density: 3.7 g/cm3
Applications:
  • Electronic components & substrates
  • High-temperature electrical insulators
  • High voltage insulators
  • Laser tubes
  • Machined components
  • Mechanical seals
  • Precision shafts and axles in high-wear environments
  • Roller and ball bearings
  • Seal rings
  • Semiconductor parts
  • Shot blast nozzles
  • Thermocouple tubes
  • Tap plates
  • Valve seats
  • Wear components
  • Wire and thread guides
  • Ballistic Armor

Alumina Ceramic Machining

Alumina ceramics are produced through methods such as injection molding, die pressing, isostatic pressing, slip casting, and extrusion. After sintering and densification, machining requires diamond grinding techniques. Advanced Ceramic Hub utilizes cutting-edge green and biscuit machining technology to produce more complex components with traditional methods. Our advanced machining center includes drilling, grinding, milling, polishing, sawing, tapping, threading, and turning, enabling the manufacture of alumina ceramic components with tight tolerances and high complexity. During the machining process, the following precautions should be observed:

  • Shrinkage Control: Alumina ceramics shrink by about 20% during sintering, requiring dimensional adjustments in the green body stage.
  • Tolerance Control: Precise tolerances are unachievable in the green or pre-sintered state; fine machining should follow sintering.
  • Diamond Grinding: Post-sintering, high-hardness alumina requires diamond grinding, as conventional methods fall short.
  • Tool Selection: Diamond-coated tools or grinding wheels are essential to handle ceramic hardness and prevent tool damage.
  • Temperature Control: Strict temperature management during sintering prevents cracking or deformation.
  • Stress Management: Excessive stress during machining must be avoided to prevent brittle failure.
  • Cutting Speed and Feed Rate: Controlled speeds and feeds ensure quality and extend tool life.
  • Surface Treatment: Post-machining polishing removes defects, enhancing performance and appearance.

Alumina Ceramic Packaging

Alumina Ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.

Download

  • Alumina Ceramic Data Sheet_PDS
  • SAFETY DATA SHEET (SDS) – Alumina Washer
  • Dodd-Frank / Conflict Minerals Certification
  • Company Profile

Get A Quote

We will check and get back to you in 24 hours.

To customize your alumina washer, please provide the following details:

  1. Dimensions: Inner Diameter × Outer Diameter × Height (thickness).
  2. Purity of the material (95%, 96%, 99%, 99.7%, 99.95%, etc.)
  3. Tolerances: Specify the required tolerances.
  4. Surface Finishes: Polished, rough, etc.
  5. Quantity of the washers you need
  6. Alternatively, you can provide a drawing with your specifications.

Once we have these details, we can provide you with a quote within 24 hours.

We carry a wide variety of alumina products in stock, and for these, there is generally no minimum order requirement. However, for custom orders, we typically set a minimum order value of $200. The lead time for stock items is usually 1-2 weeks, while custom orders usually take 3-4 weeks, depending on the specifics of the order.

Alumina ceramics is a high-performance ceramic material composed of alumina with a purity ranging from 90%~99.9%. It has excellent heat resistance, corrosion resistance, and high hardness, commonly used in industrial components, electronic substrates, and medical devices.

Alumina ceramics offers advantages including high strength, wear resistance, high-temperature tolerance (up to ℃), excellent electrical insulation, and chemical stability, performing exceptionally in harsh conditions.

  • Alumina ceramics is cost-effective with excellent hardness and wear resistance, ideal for industrial use.
  • Zirconia ceramics offer higher toughness and fracture resistance and are often used in medical and precision parts.

Advanced Ceramic Hub, established in in Colorado, USA, is a specialized supplier and manufacturer of tantalum and tantalum alloys. With extensive expertise in supply and export, we offer competitive pricing and customized solutions tailored to specific requirements, ensuring outstanding quality and customer satisfaction. As a professional provider of ceramics, refractory metals, specialty alloys, spherical powders, and various advanced materials, we serve the research, development, and large-scale industrial production needs of the scientific and industrial sectors.

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类似文章

High Alumina Ceramic Washer Ceramic Seal

1. Alumina ceramic washer ceramic seal can be used in automotive parts, such as engine gaskets, oil seals, and fuel pumps. They provide superior sealing performance and are resistant to extreme temperatures.

2. Used in water treatment systems to ensure a tight seal between pipes and water tanks. The ceramic material is resistant to corrosion and other environmental factors.

3. Used for industrial machinery, such as pumps, valves, and compressors. They provide a reliable solution for sealing components and reducing the risk of leakage.

4. Used in plumbing applications to ensure a secure connection between pipes and fixtures. The ceramic material is resistant to extreme temperatures and highly durable.

5. Used in heating and cooling systems to ensure reliable sealing between pipes. They provide superior performance and are resistant to corrosion and environmental factors.

FAQ

Q1. What information should we supply to get a quote?

Want more information on Alumina Washers? Feel free to contact us.

Please offer the specification of alumina ceramic washer sealing ring, such as shape, dimension, quantity, application etc.

Q2: How do I install an alumina ceramic washer ceramic seal?

Installing an alumina ceramic washer ceramic seal is fairly straightforward and can be done using standard tools. The key is to ensure the ring is properly aligned and evenly compressed.

Q3: What is the lifespan of an alumina ceramic washer ceramic seal?

The lifespan of an alumina ceramic washer ceramic seal depends on the application and environment it is used in. Generally, it can last for a long time with proper maintenance and care.

Q4. What is the lead time for the alumina ceramic washer ceramic seal?

The lead time is dependent on the size and quantity required. Please contact us for more information.

1. First, wipe the alumina ceramic washer ceramic seal with a damp cloth to remove dust and dirt.

2. Use a soft bristle brush and a mild detergent solution to scrub the alumina ceramic washer ceramic seal.

3. Wash the alumina ceramic washer ceramic seal with clean water, and then dry it with a soft cloth.

4. Ensure that the alumina ceramic washer ceramic seal is dry when used next time.

1. Visually inspect the industrial alumina ceramic washer for any cracks, chips, or other imperfections.

2. Measure the diameter, length, and other critical dimensions of the alumina ceramic washer to ensure that the dimensions are correct.

3. Use a surface roughness tester to check for any surface imperfections.

4. Use a hardness tester to check for any surface hardness issues.

5. Verification of the material and chemical composition of the alumina ceramic washer.

Packing way:

Production Process:

Why Choose us?

1. We supply personalized and customized services to contact your personal needs.

2. We are experienced professionals with a good record of success.

3. We provide superior client service and promptly respond to all inquiries.

4. We provide militant prices and strive to ensure that your funds receive the best value.

5. We use the latest technologies and tools to ensure that your project is completed to the highest standards.

Contact us to discuss your requirements of Microliter Ceramic Pump. Our experienced sales team can help you identify the options that best suit your needs.

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