Boron Nitride Gasket

Material: BN99, BN60, ZSBN, BN-AlN, HBR, ZSBN

SKU: HBN-G

Boron Nitride Gasket (BN Ceramic Sealing Element) – High-Temperature & Corrosion-Resistant

Boron nitride (BN) is a high-performance refractory ceramic with low porosity and properties similar to graphite. It typically has a hexagonal crystal structure but can transform into a cubic crystal under extreme heat and pressure, making it a superhard, high-temperature-resistant material.

Hexagonal boron nitride gaskets (BN seals) offer:

Exceptional high-temperature resistance
Superior thermal shock resistance
Excellent corrosion resistance

These properties make BN gaskets ideal for sealing applications in extreme environments, including high-temperature and corrosive conditions.

Boron Nitride Ceramic Basic Information

Physical Property
Item	Units	BN99, >99.3%	BN997, >99.7%	BN+ZrO2	BN+SiC	BN+AlN	BN+Si3N4
Color		White	White	White Graphite	Greyish Green	White Graphite	Dark grey
Density	g/cm3	2	1.6	2.25-2.35	2.4-2.5	2.8-2.9	2.2-2.85
Mechanical properties
Mohs hardness		2	2
Bending Strength				115	85	120	150-320
Compressive Strength				225	130	220	380-480
Flexural strength	Mpa	35	20
Thermal properties
Maximum Use Temperature	in Air	900℃	900℃	1000℃	1000℃	1000℃	1000℃
	in Insert	2100℃	2100℃	1800℃	1800℃	1800℃	1800℃
	In Vacuum	1800℃	1800℃	1800℃	1800℃	1800℃	1800℃
Thermal Conductivity(20℃)	W/(m·K)	40	50	20	30	80	40
Thermal Expansion Coefficient(20℃-1000℃)	10^-6/K	2	-0.5	3.5	2.8	2.8	2.7
Electrical properties
RT Resistivity	Ω.cm	>10^14	>10^14	>10^12	>10^12	>10^13	>10^13

Advantages of boron nitride gasket

-Excellent thermal shock resistance

-Corrosion resistance

-High-temperature resistance

-Easy to process

Applications of boron nitride gasket

-Automotive industry: Improve the environment of automobile engines, improve sealing performance, and reduce energy loss

-Aerospace industry: Boron nitride ceramic sealing rings can be used in high temperature/high pressure, corrosion-resistant environments, such as turbine components, jet engines, aerospace instruments, etc.

-Can manufacture high-temperature components, such as rocket combustion chamber linings, spacecraft heat shields, generator corrosion-resistant components, etc.

Packing

As a ceramic material, boron nitride is quite fragile in a lot of cases. Our Hot-Pressed Boron Nitride Gasket is carefully handled to minimize damage during storage and transportation. Suitable outer boxes and inner cushioning materials are used for BN products, vacuum packing is also engaged for some of the parts.