Design Features

Boron nitride ceramic sleeves (also known as ceramic structural rings) are a high-performance ceramic material primarily used in 

high-temperature, high-pressure industrial applications requiring excellent electrical insulation properties. Its main characteristics and 

application areas are as follows:

High Temperature Stability

Boron nitride ceramics maintain their structure and properties at extremely high temperatures (up to 850°C in air and up to 2000°C in inert 

gases), making them suitable for applications in high-temperature environments.

Excellent Electrical Insulation

Boron nitride provides excellent electrical insulation, with a resistivity as high as 10^16 Ω·cm at room temperature, ensuring safety in 

electrical applications.

Excellent Thermal Conductivity

It has high thermal conductivity (50-70 W/(m·K)), making it suitable for use as part of thermal management systems to optimize the thermal 

performance of equipment.

Low Coefficient of Thermal Expansion

It has a low coefficient of thermal expansion (1-1.2 x 10^-6/K), maintaining dimensional stability in thermal cycling applications and 

reducing thermal stress problems.

Chemical Inertness

It exhibits high resistance to most chemicals and corrosive environments, ensuring unaffected performance in harsh conditions.

Self-Lubricating Properties

Hexagonal boron nitride possesses certain lubricating properties, making it suitable for mechanical applications requiring a low coefficient 

of friction.

Application areas

Semiconductor Manufacturing

In semiconductor manufacturing, boron nitride sleeves are used for handling and positioning sensitive silicon wafers, especially in heat 

treatment and wafer fabrication, providing essential structural support and thermal management.

Aerospace Applications

Suitable for high-temperature components in the aerospace field, such as engine components and thermal protection systems, where 

materials need to withstand extreme temperatures and mechanical stresses.

Electronic Devices

Used as insulators and thermal interface materials at high temperatures, protecting sensitive electronic components from overheating 

damage.

High-Temperature Industrial Equipment

In high-temperature industrial applications, such as heat treatment furnaces, kilns, and reactors, boron nitride sleeves are used as 

structural and insulating components.

Boron nitride ceramic tubing, with its high-temperature stability, excellent electrical insulation, and good thermal management capabilities, 

has become an indispensable material in semiconductor, aerospace, and high-temperature industrial applications. Its design and material 

characteristics make it particularly important in modern technological applications requiring high reliability and precise control, providing 

an ideal solution for precision equipment in various extreme environments.

In the field of precision ceramic machining and customization, our company is committed to producing various high-performance ceramic 

components, including zirconia ceramics, silicon nitride, and aluminum nitride. These ceramic components possess excellent thermal stability, 

electrical insulation, high-temperature stability, and wear resistance, and are widely used in key fields such as aerospace, electronics, 

machinery, military, and automotive. Our products, with their superior performance and reliability, provide crucial support and assurance to 

our customers, helping them improve production efficiency and optimize product performance.