Custom high quality aluminum washers and rings

Overview of Aluminium oxide washers, rings

Alumina washers and rings are ceramic products with the advantages of high hardness, high-temperature resistance, corrosion resistance, and good insulation. Alumina washers and rings are mainly used in mechanical seals, chemical equipment, electronic devices and other fields. Washers are used to seal joints to prevent leakage; rings can be used for support, positioning or as electrical insulation components. Its good chemical stability enables it to work stably for a long time in harsh environments, and it is an indispensable component in modern industry.

Features of Aluminium oxide washers, rings

Alumina washers and rings are highly favored in the industrial field for their excellent performance. They are extremely hard and wear-resistant and can maintain a stable shape and size during long-term mechanical operation. Even in a high-load friction environment, they are difficult to wear. The high-temperature resistance of this material is particularly outstanding. It can maintain its physical and chemical properties under extremely high-temperature conditions and will not deform or degrade due to temperature increases, thereby ensuring the normal operation of the equipment in a high-temperature environment.

In addition, alumina washers and rings are extremely corrosion-resistant and can resist the erosion of a variety of acids, alkalis, salts and other chemical substances, which makes them ideal sealing and supporting components in the chemical, pharmaceutical and other industries, effectively preventing the leakage of chemical media and corrosion of equipment. At the same time, alumina washers and rings also have good insulation properties, which can effectively isolate current, prevent short circuits and leakage, and ensure the safe operation of equipment. They are especially suitable for insulating components of electronic devices and electrical equipment.

In practical applications, alumina washers are mainly used for sealing pipes, valves, flanges and other parts, which can effectively prevent the leakage of liquids or gases and ensure the sealing and safety of equipment. Alumina rings are often used for support and positioning in mechanical devices to ensure the stable operation of the equipment. Whether as sealing elements or supporting components, alumina washers and rings provide strong support for the efficient operation of modern industry with their reliable performance and long service life and are indispensable key components in many industrial equipment.

Specifications table of Aluminium oxide washers, rings

Parameter	Description	Aluminum Oxide Washers	Aluminum Oxide Rings
Material	Chemical Composition	– 99.5% pure aluminum oxide (Al₂O₃)<br>- Trace impurities as per industry standards	– 99.5% pure aluminum oxide (Al₂O₃)<br>- Trace impurities as per industry standards
Form	Physical Shape	– Flat, circular with a central hole<br>- Thickness uniformity ±0.1 mm	– Circular with a central hole<br>- Wall thickness uniformity ±0.1 mm
Dimensions	Size Variations	– Outer Diameter (OD): 5 mm to 50 mm<br>- Inner Diameter (ID): 2 mm to 40 mm<br>- Thickness: 1 mm to 10 mm	– Outer Diameter (OD): 10 mm to 100 mm<br>- Inner Diameter (ID): 5 mm to 90 mm<br>- Wall Thickness: 1 mm to 10 mm
Density	Mass per unit volume	– 3.95 to 4.02 g/cm³	– 3.95 to 4.02 g/cm³
Hardness	Resistance to scratching	– Vickers Hardness: 1800 to 2000 HV	– Vickers Hardness: 1800 to 2000 HV
Porosity	Presence of voids	– Low porosity, typically < 1%	– Low porosity, typically < 1%
Color	Appearance	– White or off-white	– White or off-white
Surface Finish	Surface texture	– Polished to a smooth finish<br>- Surface roughness: < 0.5 µm Ra	– Polished to a smooth finish<br>- Surface roughness: < 0.5 µm Ra
Electrical Properties	Conductivity and insulation	– Insulating material<br>- Dielectric strength: > 10 kV/mm	– Insulating material<br>- Dielectric strength: > 10 kV/mm
Thermal Properties	Heat resistance and conductivity	– Thermal conductivity: 20 to 30 W/m·K<br>- Thermal expansion coefficient: 7.5 x 10⁻⁶ /°C	– Thermal conductivity: 20 to 30 W/m·K<br>- Thermal expansion coefficient: 7.5 x 10⁻⁶ /°C
Mechanical Properties	Strength and durability	– Compressive strength: > 350 MPa<br>- Tensile strength: > 150 MPa	– Compressive strength: > 350 MPa<br>- Tensile strength: > 150 MPa
Chemical Resistance	Resistance to chemicals	– Excellent resistance to acids, bases, and solvents<br>- Corrosion resistance in most environments	– Excellent resistance to acids, bases, and solvents<br>- Corrosion resistance in most environments
Applications	Typical uses	– Electrical insulation<br>- Mechanical support<br>- High-temperature applications	– Sealing elements<br>- High-temperature applications<br>- Mechanical support

Play

Applications of Aluminium oxide washers, rings

Alumina washers and rings are widely used in many industrial fields due to their unique physical and chemical properties. Here are some of their main uses:

Alumina washers are usually used in situations where high insulation performance and high mechanical strength are required. For example, in electronic equipment, alumina washers can effectively isolate circuit components and prevent short circuits while also withstanding certain mechanical pressure to ensure stable operation of the equipment. In high-temperature environments, such as the sealing parts of ceramic kilns, alumina washers can withstand high temperatures without deformation and maintain good sealing performance. In addition, alumina washers also have good chemical stability and can resist corrosion from most acid and alkali solutions. Therefore, they are also widely used in chemical equipment to prevent chemical media leakage and protect the safety of equipment and personnel.

Alumina rings are mainly used in situations where precise support and sealing are required. In the field of mechanical manufacturing, alumina rings can be used as support components for bearings. Their high hardness and wear resistance can withstand greater friction and extend the service life of bearings. In the aerospace field, alumina rings can be used for sealing and supporting engine components. Their lightweight and high-strength characteristics can meet the strict requirements of aerospace equipment for materials. In medical equipment, alumina rings can be used to manufacture medical devices such as artificial joints that are implanted in the body. Their biocompatibility and wear resistance can ensure the long-term and stable use of the devices in the human body. In addition, alumina rings can also be used to manufacture various filters and separators. Their microporous structure can effectively filter impurities in liquids or gases and improve the purity and quality of products.

In general, alumina washers and rings play an important role in electronics, machinery, chemicals, aerospace, medical and other fields with their excellent performance, providing reliable material support for the development of modern industry.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

Payment Term

T/T, Western Union, Paypal, Credit Card etc.

Shipment Term

By air, by sea, by express, as customers request.

5 FAQs of Aluminium oxide washers, rings

Q1:What media can aluminum oxide washers and rings come into contact with?

Aluminum oxide washers and rings have good chemical corrosion resistance and can come into contact with most chemical media, including strong acids and strong bases. This makes them widely used in industries such as chemicals that need to come into contact with various chemicals, but when they come into contact with certain specific substances, they may need to be evaluated and selected based on the specific chemical properties.

Q2: How to choose the right aluminum oxide washers and rings?

There are several factors to consider when choosing the right aluminum oxide washers and rings. These include the required size and specifications to ensure that they meet the specific requirements of the application; the characteristics and quality of the materials to ensure their performance; and the environmental conditions of the application, such as temperature, pressure, and chemicals, to ensure that they can work properly in a specific environment.

Q3: What should be paid attention to when installing aluminum oxide washers and rings?

 When installing aluminum oxide washers and rings, you need to ensure that the installation surface is clean and flat to avoid affecting the sealing effect and service life. Use appropriate installation tools and methods to avoid damage to the product. At the same time, the manufacturer’s installation guidelines and recommendations should be followed to ensure correct installation and use.

Q4: Can aluminum oxide washers and rings be reused?

It is generally not recommended to reuse aluminum oxide washers and rings. During use, they may be worn, deformed or otherwise damaged, affecting their sealing performance and service life. It is generally recommended to replace them after each use to ensure their reliability and safety.

Q5: How to maintain aluminum oxide washers and rings?

 Methods for maintaining aluminum oxide washers and rings include regularly checking them for signs of wear, cracking or degradation so that problematic products can be discovered and replaced in a timely manner; when not in use, they should be stored in a cool and dry place, away from direct sunlight and contact with chemicals to extend their service