Boron Nitride Gasket

Boron Nitride Machining Center HM 2

Boron Nitride Gasket

Material Grade: Grade A, Grade AX05, Grade HP, M/M26, ZSBN, HMBN 1000, HMBN2000, HMBN3000, HMBN4000, HMBN5000, etc.

  • Custom sizes and standard sizes in stock
  • Quick Lead Time
  • Competitive Price

  • Boron nitride gaskets are made of hot-pressed boron nitride ceramic with excellent electrical insulation, thermal stability, and chemical inertness. As a leading supplier and manufacturer of premium boron nitride products, we can supply high-quality boron nitride gaskets in various specifications and competitive prices, and offer customized solutions for specific requirements.
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Data Sheet of Boron Nitride gaskets

Reference:

HM1309

Material Grade:

Grade A, Grade AX05, Grade HP, M/M26, ZSBN, HMBN 1000, HMBN2000, HMBN3000, HMBN4000, HMBN5000, etc.

Color:

White

Melting Point:

2937 ℃

Density

1.9-2.2 g/cm3

Dielectric Constant:

4.3

Boron Nitride gaskets

Boron nitride gaskets are manufactured from high-purity boron nitride powder using an advanced vacuum hot-press sintering process. This high-performance sealing component is designed for extreme environments and offers exceptional thermal stability (up to 2000°C), chemical resistance, and electrical insulation. It is ideal for high-temperature furnaces, semiconductor manufacturing, chemical processing, aerospace, and energy applications. Our boron nitride gaskets are customizable in dimensions, shapes, and thicknesses, providing durability and precision for your most demanding sealing needs. Advanced Ceramic Hub can also supply high-purity boron nitride products with various additives based on specific requirements.

Boron Nitride gaskets Advantages

  • Low density
  • High resistivity
  • High breakdown voltage
  • High thermal conductivity
  • Low coefficient of thermal expansion
  • Good thermal shock resistance
  • High working temperature under vacuum and gas protection
  • Good corrosion resistance
  • No wetting with metals (no oxidation)
  • Good machinability

Boron Nitride gaskets Applications

  • The boron nitride gaskets is used as an insulator for high-pressure and high-frequency arcs, plasma arcs and various heating insulators, heating tube sleeves, as well as insulating high-temperature, high-frequency and high-voltage cooling components and materials for electric furnaces in high-frequency applications.
  • The boron nitride gaskets serves as an insulator for high-pressure and high-frequency arcs, plasma arcs and various heating insulators, heating tube sleeves as well as insulating high-temperature, high-frequency and high-voltage cooling components and materials for electric furnaces in high-frequency applications.
  • The boron nitride gasket can be used to manufacture high-temperature components, linings for rocket combustion chambers, heat shields for spacecraft, corrosion-resistant parts for MHD generators, and more.
  • Aerospace Applications HM 1
    Aerospace
  • Electric and Electrical Equipments HM
    Electrical and Electronic Area
  • High temperatuer furnaces applications HM 1
    High-temperature Furnaces
  • Semiconductor Applications HM
    Semiconductor Manufacturing

Boron Nitride Material Properties

Items

Unit

Grade A

Grade AX05

Grade HP

Grade M26

Grade ZSBN

HMBN1000

HMBN2000

HMBN3000

HMBN4000

HMBN5000

Density

g/cm3

2.0

1.9

2.0

2.1

2.9

1.9

2.1

1.9

1.85-2.05

2.0

Compressive Strength

MPa

143 ∥ / 186 ⊥

25 ∥

96 ∥

–

219 ∥ / 254 ⊥

40 ∥ / 40 ⊥

312 ∥ / 312 ⊥

24 ∥

95 ∥

–

Flexural Strength

MPa

94 ∥ / 65 ⊥

22 ∥ / 21 ⊥

59 ∥ / 45 ⊥

62 ∥ / 34 ⊥

144 ∥ / 107 ⊥

13 ∥ / 29 ⊥

>49

21 ∥ / 20 ⊥

58 ∥ / 44 ⊥

61 ∥ / 33 ⊥

Young’s Modulus

GPa

47 ∥ / 74 ⊥

17 ∥ / 71 ⊥

40 ∥ / 60 ⊥

–

–

–

–

45 ∥ / 73 ⊥

39 ∥ / 58 ⊥

–

Poisson’s Ratio

MPa

94 ∥ / 65 ⊥

22 ∥ / 21 ⊥

59 ∥ / 45 ⊥

62 ∥ / 34 ⊥

144 ∥ / 107 ⊥

14 ∥ / 30 ⊥

< 50

20 ∥ / 20 ⊥

50 ∥ / 50 ⊥

50 ∥ / 50 ⊥

Items

Unit

Grade A

Grade AX05

Grade HP

Grade M26

Grade ZSBN

HMBN1000

HMBN2000

HMBN3000

HMBN4000

HMBN5000

Thermal Conductivity

W/mK

30 ∥ / 34 ⊥

78 ∥ / 130 ⊥

27 ∥ / 29 ⊥

11 ∥ / 29 ⊥

24 ∥ / 34 ⊥

21 ∥ / 21 ⊥

–

73 ∥ / 128 ⊥

27 ∥ / 29 ⊥

11 ∥ / 26 ⊥

Max Temp (Oxidizing) 1

°C

850

850

850

1000+

850

850

850

850

850

1000

Max Temp (Inert) 1

°C

1200

2000

1150

1000+

1600

20005.5 ∥ / 1 ⊥

1000

2000

1200

1000

CTE2 25°C ➞ 400°C

10-6/K

3.0 ∥ / 3.0 ⊥

-2.3 ∥ / -0.7 ⊥

0.6 ∥ / 0.4 ⊥

3.0 ∥ / 0.4 ⊥

4.1 ∥ / 3.4 ⊥

–

–

-2.3 ∥ / -0.7 ⊥

0.6 ∥ / 0.4 ⊥

3.0 ∥ / 0.4 ⊥

CTE2 400°C ➞ 800°C

10-6/K

2.0 ∥ / 1.4 ⊥

-2.5 ∥ / 1.1 ⊥

1.1 ∥ / 0.8 ⊥

2.5 ∥ / 0.1 ⊥

5.6 ∥ / 4.3 ⊥

–

–

-2.5 ∥ / 1.1 ⊥

1.1 ∥ / 0.8 ⊥

5.6 ∥ / 4.3 ⊥

CTE2 800°C ➞ 1200°C

10-6/K

1.9 ∥ / 1.8 ⊥

1.6 ∥ / 0.4 ⊥

1.5 ∥ / 0.9 ⊥

3.0 ∥ / 0.1 ⊥ 

7.2 ∥ / 5.2 ⊥ 

–

–

1.6 ∥ / 0.4 ⊥

1.5 ∥ / 0.9 ⊥

7.2 ∥ / 5.2 ⊥

CTE2 1200°C ➞ 1600°C

10-6/K

5.0 ∥ / 4.8 ⊥

0.9 ∥ / 0.3 ⊥

2.8 ∥ / 2.7 ⊥

–

4.6 ∥ / 3.4 ⊥

–

–

0.9 ∥ / 0.3 ⊥

2.8 ∥ / 2.7 ⊥

4.6 ∥ / 3.4 ⊥

CTE2 1600°C ➞ 1900°C

10-6/K

7.2 ∥ / 6.1 ⊥

0.5 ∥ / 0.9 ⊥

–

–

–

–

–

0.5 ∥ / 0.9 ⊥

–

–

CTE2 25°C ➞ 1000°C

10-6/K

–

–

–

–

–

5.5 ∥ / 1 ⊥

2.5 ∥ / 2.0 ⊥

–

–

–

Items

Unit

Grade A

Grade AX05

Grade HP

Grade M26

Grade ZSBN

HMBN1000

HMBN2000

HMBN3000

HMBN4000

HMBN5000

Dielectric Strength

kV/mm

88

79

>10

66

3.5

>40

–

>40

>40

>40

Dielectric Constant

1 MHz

4.6 ∥ / 4.2 ⊥

4.0 ∥ / 4.0 ⊥

4.3 ∥ / 4.0 ⊥

4.5 ∥ / 3.8 ⊥

18 ∥ / 19 ⊥

–

–

4.0 ∥ / 4.0 ⊥

4.3 ∥ / 4.0 ⊥

4.5 ∥ / 3.8 ⊥

Dissipation Factor

1 MHz

1.2-3 ∥ / 3.4-3 ⊥

1.2-3 ∥ / 3.0-3 ⊥

1.5-3 ∥ / 2.1-3 ⊥

1.7-3 ∥ / 6.7-3 ⊥

4.5-2 ∥ / 6.7-2 ⊥

–

–

1.2 -3 ∥ / 3.0 -4 ⊥

1.5 -3 ∥ / 2.1 -3 ⊥

1.7 -3 ∥ / 6.7 -3 ⊥

Volume Resistivity @25°C

ohm-cm

>1013 ∥ / 1014 ⊥

 >1013 ∥ / 1014 ⊥

 >1013 ∥ / 1013 ⊥

 >1013 ∥ / 1014 ⊥

 >1013 ∥ / 1012 ⊥

>1014 

–

 >1013 ∥ / 1014 ⊥

 >1013 ∥ / 1013 ⊥

 >1013 ∥ / 1014 ⊥

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Grade ZSBN Applications:

  • Break rings for continuous casting of metals
  • Components
  • Crucibles
  • Deck plates
  • Heat treatment fixtures
  • High temperature bearings
  • High temperature mechanical components
  • High temperature valves
  • Jigs
  • Molds
  • Molten metal and glass castings
  • Muffles
  • Nozzles for transfer or atomization
  • Side dams
  • Spacers

HMBN1000 is a high-purity, hot-pressed boron nitride designed for demanding high-temperature applications. It offers low thermal expansion, excellent thermal shock resistance, and superb thermal conductivity. With good chemical resistance to molten metal and glass, it also provides low friction and electrical insulation with high dielectric strength. Easily machinable, HMBN1000 is ideal for applications requiring minimal binder, and can be produced up to 300mm in diameter and length.

HMBN1000 Applications:

  • Electric propulsion discharge channels for Hall Effect Thrusters
  • Setter plates for high temperature furnaces
  • Crucibles for molten glass and metals
  • Electrical insulators for high temperatures and high voltages
  • Vacuum feedthroughs
  • Plasma chamber lining and fittings
  • Nozzles for non-ferrous metals and alloys
  • Thermocouple protection tubes and sheaths
  • Laser supports

HMBN2000 is a hot-pressed boron nitride/silica composite known for its excellent dielectric performance, insulation, and thermal shock resistance. It offers low thermal expansion and good flexural strength, while being easily machinable.

HMBN2000 Applications:

  • Electric propulsion discharge channels for Hall Effect Thrusters
  • Plasma/corona insulators
  • Plasma constraints in PVD systems
  • Wear and corrosion resistance
  • Ultra high vacuum insulators

HMBN3000 is a high-purity, binder-free hot-pressed boron nitride designed for demanding high-temperature applications. It features very low thermal expansion, superb thermal shock resistance, excellent thermal conductivity, and minimal thermal cycling. Easily machinable to tight tolerances, it offers good chemical resistance to molten metals and low friction. Non-reactive with graphite and refractory metals up to 2000°C, it also provides high dielectric strength and electrical resistivity. Ideal for high-temperature applications, HMBN3000 can be machined from large billets up to 490mm x 490mm x 400mm.

HMBN3000 Applications:

  • Setter plates for high temperature furnaces
  • Crucibles for non-oxide ceramics, phosphors, and metals
  • Electrical insulation for extremely high temperatures and high voltages
  • Components exposed to molten salts
  • Hall Effect Thruster insulators
  • Nozzles for non-ferrous metals and alloys
  • Thermocouple protection tubes and sheaths
  • Laser supports

HMBN4000 is a strong, hard, hot-pressed boron nitride designed for demanding applications. It offers low thermal expansion, excellent thermal shock resistance, and good thermal conductivity. This economical hexagonal Boron Nitride grade is easily machinable to tight tolerances, with low thermal cycling and chemical resistance to molten metals up to 1000°C. Its lubricity provides low friction, and it retains high dielectric strength and electrical resistivity up to 1000°C. HMBN4000 is ideal for applications requiring strength, and can be machined from large billets up to 490mm x 490mm x 400mm.

HMBN4000 Applications:

  • Setter plates for furnaces
  • Crucibles for non-oxide ceramics, phosphors, and metals
  • Electrical insulation for high temperatures and high voltages
  • Components exposed to molten salts
  • Nozzles for non-ferrous metals and alloys
  • Thermocouple protection tubes and sheaths

HMBN5000 is a high-purity, hot-pressed boron nitride with a silica matrix, offering excellent machinability, moisture resistance, and high fracture toughness. This versatile grade features low thermal shock, with the ability to exceed temperature limits for short periods without damage. It maintains its shape and properties after cooling and can be machined from large billets up to 490mm x 490mm x 400mm. HMBN5000 also provides outstanding electrical insulation, with high dielectric strength and resistivity up to 1000°C, making it ideal for demanding applications.

HMBN5000 Applications:

  • Microwave components
  • Electrical insulation for high temperatures and high voltages
  • Hall Effect Thruster insulators