K26 Insulation Brick

K26 insulation brick is a special type of brick that is slightly denser than K23 brick. Moreover, it can withstand high temperatures and act as thermal insulation. Customers can use it as a lining inside casting furnaces, forging furnaces and ceramic kilns.

  • Al2O3(≥): 51%
  • Bulk Density: 0.78g/cm3 – 0.80g/cm3
  • Cold Crushing Strength: 1.3MPa
  • Thermal Conductivity: 0.27W/(m·K) – 0.33 W/(m·K)

Best K26 Insulation Brick

Brief Introduction of K26 Insulation Brick

Excellent Thermal Insulation Properties
Good Thermal Stability
High Compressive Strength
Easy to Cut

Just like the K23 insulating refractory bricks, these are perfect for insulating heat. Moreover, the low thermal conductivity of K26 insulation brick effectively reduces heat transfer and improves energy efficiency. Besides, Kerui can cut smaller bricks or add channels for heating elements according to the specific requirements of the customer. In other words, Kerui can meet any needs of customers. You can also follow us on Pinterest to learn more about specific information or send us your specific needs. Our technical experts will design the best application solution for you based on your needs.

K26 Insulation Brick
K26 Insulation Bricks

K26 Insulation Brick Technical Indicators

ω (Al2O3)/ ≥ %51
ω (SiO2)/ ≤ %35
ω (Fe2O3)/ ≤ %0.4
Bulk Density (g/cm³)0.78-0.80
Classification Temperature ℃(℉)1430 (2600)
Cold Crushing Strength/MPa1.3
Thermal Expansion 1000℃(%)0.7
Permanent Linear Change/% (T/℃*12h)1400℃
Thermal Conductivity Coefficient ≤/[W/(m·K)]400℃0.27

Insulation Brick
K23 Insulation Brick for Sale
Kerui Mullite Insulation Brick

K26 Insulation Brick Usages

Industrial Kiln

As a type of mullite insulation brick for sale, we commonly use K26 insulation bricks as thermal insulation layers in industrial kilns. It can effectively reduce heat loss and improve the energy efficiency of the kiln. So, we can see it in various high-temperature kilns. Such as steel smelting furnaces, glass kilns and ceramic kilns.

Heat Treatment Furnace

We can also use K26 fire bricks in various heat treatment furnaces. Such as quenching furnaces, tempering furnaces and annealing furnaces. It can effectively isolate the high-temperature furnace from the external environment. So, they provide a stable heat treatment environment and reduce energy consumption.

High Temperature Equipment

You can also see K26 insulation bricks in the insulation layers of various high-temperature equipment. Such as furnace walls, heating furnaces, furnaces, etc. It can lower the surface temperature of the equipment and reduce heat conduction. What’s more, it improves the efficiency and safety of the equipment.

High Temp Pipes and Chimneys

K26 insulating fire brick, like insulating fire bricks K23, can be used as the insulation layer for high-temperature pipes and chimneys. They prevent heat loss and overheating of pipes or chimneys. In addition, they also effectively reduce energy waste and improve the safety of pipes and chimneys.

Thermal Energy Storage System

Kerui K26 insulation bricks can meet the usage conditions of thermal energy storage systems. Such as thermal energy storage tanks and thermal energy storage furnaces. Therefore, its excellent thermal insulation properties help reduce heat loss and achieve efficient storage and utilization of thermal energy.

Other Industrial Equipment

Customers can also use them for thermal insulation of thermal power plants, nuclear power plants, production catalysts, heat exchangers, reactors, rocket engines, jet engines and other key components. At the same time, Kerui insulation bricks can also ensure the normal operation and safety of the equipment.

Uses of Insulation Brick
Used in Heat Treatment Furnace
Steel Smelting Furnace
Used in Steel Smelting Furnace


Classic Comments from Customers about Kerui K26 Insulation Brick

Product Cost-Effective

“Kerui Refractory’s K26 refractory bricks China are reasonably priced and affordable. Kerui refractory products are of higher quality and performance than other suppliers I have purchased from. I found that by purchasing their insulation tiles, I was able to get a better price without sacrificing quality. So that makes me very happy with their products.”

Provide Technical Support

“As a customer, I am very satisfied with the technical support provided by Kerui Company. Their team has extensive industry experience and expertise. Moreover, it helped me a lot when I purchased and used the K26 firebrick. Besides, whether it’s product selection, installation or maintenance, they can provide accurate advice and guidance.”

Short Delivery Cycle

“They ship quickly which is very important to me. Because I usually need the materials I need as quickly as possible to meet the project schedule. They were able to process my order promptly and get the product to me within a short period. Kerui Group‘s efficient distribution allowed me to work on schedule and avoid unnecessary project delays.”

Good After-Sales Service

“I am deeply impressed by the after-sales service provided by Kerui. Whether it is problems encountered during product use or maintenance and repairs required, they are always able to respond in time. Their customer service team was friendly and professional and ensured my issues were resolved promptly. So, that made me feel very reassured.”

High Temperature Ceramic Insulation laboratory

Kerui Fire Brick Manufacturers Customers


Do you want to buy high-quality K26 insulation bricks or other types of thermal insulation bricks? Please leave your specific needs in the message box and we will reply to you within 24 hours. In addition, Kerui will provide excellent refractory bricks and perfect solutions for your project!

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