zhengzhou kerui (group) refractory co.,ltd
Provide Leading Solutions for High Temperature Kilns

JM26 Insulation Brick

JM26 insulation brick not only has excellent thermal insulation performance as well as high temperature resistance. It is worth mentioning that this product is one of the few insulation bricks that can be in direct contact with flames.

  • 54-56%

    Al2O3 (≥)

  • 0.7-1.0g/cm³

    Bulk Density

  • 0.21-0.32 W/(m·K)

    Thermal Conductivity

  • 2.0-3.2MPa

    Cold Crushing Strength


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KERUI JM26 Insulation Brick

Parameters of JM26 Insulation Brick

JM26 insulation brick is a high-quality material used in high-temperature environments with excellent performance and durability. According to test results from the Kerui physics and chemistry laboratory, the product’s load softening onset temperature is approximately 1400℃ (2552℉), which means it can maintain stability and strength in high-temperature environments. In addition, the service temperature of JM26 mullite insulation brick can reach 1790℃ (3254℉). It’s suitable for various high temperature applications.

The excellent performance of JM26 insulation brick is due to the use of high-quality raw materials. These raw materials include higher alumina content and a uniformly distributed glass phase. Aluminum oxide is a high temperature resistant material that can resist chemical attack and thermal shock effects at high temperatures. The evenly distributed glass phase enhances the structural stability and durability of the bricks.

According to international and industry standards, the following are some parameters of JM26 insulation bricks for your reference:

ω (Al2O3)/ ≥ %54555656
ω (Fe2O3)/ ≤ %0.9 0.9 1.0 1.0
Bulk Density (g/cm³)0.70.80 0.91.0
Cold Crushing Strength/MPa2.0 2.32.8 3.2
Permanent Linear Change/% (T/℃*12h)1400140014001400
Thermal Conductivity Coefficient ≤/[W/(m·K)] (350℃) 0.32

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Kerui JM26 Insulation Brick

Features and Advantages of KERUI JM26 Insulation Brick

Low Thermal Conductivity

The low thermal conductivity of mullite insulation bricks provides excellent insulation properties. The structure of JM26 mullite insulation bricks contains many tiny pores and gases, which can hinder heat conduction and play a thermal insulation role.

High Temperature Strength

Kerui JM26 insulation bricks exhibit high temperature compressive strength. This ensures the strength and stability of the masonry structure. Besides, this feature is crucial for high temp applications. Find more related product on Kerui Facebook.

High Refractoriness

Mullite insulation bricks have a low impurity content, including low levels of iron and alkali metal oxides. This high purity level contributes to their excellent refractoriness. It allows to maintain their performance even in reducing atmospheres.

Energy Efficiency

Mullite insulation bricks have low heat storage and low thermal conductivity characteristics, making them highly energy-efficient, especially in intermittent operations. This product can store minimal amounts of heat energy, which results in significant energy savings.

Accurate Dimension and Shape

Kerui adopts precise and consistent manufacturing for JM26 brick. This allows for faster marsonry as well as less fire brick motar required. The accurate dimensions also ensure the strength and stability of the masonry, thereby extending the lining’s lifespan.

Ease of Processing

Mullite insulation bricks are easy to process and can be customized into special shapes based on customer needs and provided drawings. This capability reduces the number of bricks required and minimizes the number of joints in the masonry.

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Wide Uses of JM26 Insulation Brick

JM26 mullite insulation bricks are suitable for various places that require insulation layers, especially in high temperature environments. Here are some common application scenarios:

  • Cracking furnace: the JM26 mullite insulation bricks can be used as linings for cracking furnaces to effectively isolate the high-temperature furnace from the surrounding environment and improve energy efficiency.
  • Hot blast stove: JM26 bricks are suitable for the top, furnace body and bottom of the hot blast stove, which can provide good insulation effect and reduce energy loss.
  • Ceramic roller kiln: Kerui JM26 bricks can be used in the lining of ceramic roller kilns to help maintain a constant temperature and improve product quality and production efficiency.
  • Electric porcelain drawer kiln: JM26 bricks are suitable for the lining of electric porcelain drawer kilns, which can effectively reduce energy consumption and improve the thermal efficiency of the kiln.
  • Glass crucible: JM26 mullite insulation bricks can be used as linings for glass crucibles to help maintain a constant temperature and ensure smooth melting and forming processes of glass.
  • Electric furnace lining: the JM26 mullite insulation bricks are suitable for lining various types of electric furnaces, including smelting furnaces, sintering furnaces, annealing furnaces, etc. The alumina insulation product provide excellent insulation properties and help save energy consumption.
  • Other high temperature insulation linings…

Kerui Customers

Choose JM26 Insulation Brick from Kerui

International Certificates

Firstly, Kerui JM26 Brick has obtained international certificates including ISO, CE, and SGS. It’s in line with international quality standards. These certifications assure customers that they are purchasing a product that meets the highest quality requirements. This helps them make informed purchasing decisions while reducing the risk associated with buying insulation bricks.

Reasonable Price

As a direct insulating fire brick supplier, Kerui Refractory provides factory prices. Additionally, their ability to control production costs through scale manufacturing allows them to offer competitive prices. This combination of affordability and quality makes JM26 Insulation Brick an attractive option for those looking for cost-effective insulation solutions.

Reliable Service

There is a highly skilled service team in Kerui. They are ready to provide customized services, technical support, and after-sales service. Moreover, this team consists of experienced technicians who are dedicated to meeting customer needs and ensuring their satisfaction. By offering personalized assistance, JM26 Insulation Brick from Kerui demonstrates its commitment to providing a seamless and hassle-free experience for customers.

Quick Delivery

Quick delivery is another important reason about choosing JM26 insulation brick from Kerui. The automated production system and efficient delivery team ensure timely delivery of orders. In addition, Kerui business managers maintain close contact with customers, which keeps customers informed about the progress of the orders. This commitment to prompt delivery allows customers to receive their insulation bricks on time. Therefore, it’s helpful to meet the project deadlines.

Kerui QMS Certificate
QMS Certificate
Kerui OHSM Certificate
OHSM Certificate
Kerui EMS Certificate
EMS Certificate
Kerui CE Certificate
CE Certificate

Shipment of KERUI Refractory Brick


KERUI JM26 insulation brick stands out as a premier choice for enhancing furnace performance across diverse industrial sectors. By considering the benefits and application, customers can choose JM26 insulation brick to elevate the furnace operations to new heights of efficiency and reliability.

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