RCF Board LZ 2550

Temperature Grade

1400℃ (2550℉)


Alumina, Silica

With an addition of 5% zirconia in its raw materials, CCEWOOL® Ceramic Fiber Board LZ is designed to resist excessive shrinkage at high temperatures. It has superior heat resistance and can withstand chemical and mechanical stress better than standard ceramic fiber boards.

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CCEWOOL® RCF Board LZ 2550

CCEWOOL® Ceramic Fiber Board LZ is a zirconium alumina refractory ceramic fiber board made from low-zirconium refractory ceramic fiber spun cotton as raw material, produced through a fully automated vacuum forming process. It operates continuously for 24 hours and dries quickly, resulting in better compressive strength. The surface is smooth, the dimensions are precise, and it is easy to install. It is a refractory fiber insulation material capable of withstanding high temperatures up to 1400℃ (2550℉). There are various standard thicknesses available for selection.


  • Ultra-Low Shot Content

    Shot content is a crucial factor in determining the thermal conductivity of fibers. Using a unique shot removal process, our fibers achieve ultra-low shot content, demonstrating excellent thermal performance with low thermal conductivity and superior insulation properties in continuous high-temperature environments.

  • Minimal Shrinkage Rate

    Strict control of harmful impurities is essential for reducing thermal shrinkage and enhancing heat resistance. Through rigorous raw material management, we reduce impurity content to below 1%, ensuring low thermal shrinkage and high heat resistance in our fiber boards.

  • Strongest compressive strength

    Compressive strength refers to the fiber board's ability to resist breaking under pressure. Using a fully automatic drying system, the drying process is faster and more thorough, achieving deep drying in 2 hours with uniform results. This ensures the product has superior compressive strength.

  • Lowest Thermal Conductivity

    Through strict quality control and high-standard production processes, CCEWOOL® minimizes shot content and meticulously controls bulk density, achieving the lowest thermal conductivity. This provides customers with exceptional insulation performance and more efficient energy-saving solutions.

Features of Ceramic Fiber Board LZ 2550

  • Low heat capacity, low thermal conductivity

    This board exhibits very low capacity to retain heat and minimal thermal conductivity, ensuring efficient thermal insulation to conserve energy and maintain temperature stability.

  • Non-brittle material, good elasticity

    This board is crafted from a non-brittle material with excellent elasticity, ensuring durability under mechanical stress without risk of fracturing or breaking, which is crucial for long-term performance in industrial environments.

  • High compressive strength

    It exhibits high compressive strength, allowing it to withstand significant pressure without deforming or compromising its structural integrity, making it suitable for applications requiring robust support and load-bearing capabilities.

  • Excellent wind-erosion resistance, long service life

    It offers excellent resistance to wind erosion and other environmental factors, contributing to an extended service life and maintaining performance integrity in harsh outdoor or exposed conditions.

  • Excellent thermal stability and thermal shock resistance

    It exhibits exceptional thermal stability and resistance to thermal shock, maintaining structural integrity and performance reliability even in environments with fluctuating temperatures, ensuring consistent insulation effectiveness.

  • Continuous production, even fiber distribution and stable performance

    Produced using a continuous manufacturing process, this board guarantees uniform distribution of fibers and stable performance, ensuring reliable insulation properties and ease of installation across various applications.

Application of Ceramic Fiber Board LZ 2550

Comprehensive Solutions for Industrial Refractory and Insulation Applications

Refractory lining; Insulating backup to dense refractory materials; Insulating backup to brick & castable; Furnace hot face lining in ceramic kiln, box furnace & petrochemical furnace; Use in industrial heat processing equipment; Rigid high-temperature gaskets & seals; High-temperature baffles & muffles; Flue & chimney linings in furnaces & kilns; Molten metal trough covers; Hot gas duct linings; Expansion joints; Industrial heat shields & thermal barriers; Industrial combustion chamber construction; Domestic appliance & light-duty industrial combustion chamber construction.

Specifications & Sizes

CCEWOOL® RCF Board LZ 2550

Classification Temperature (℃)(℉) 1400℃ (2550℉)
Operation Temp(℃)(℉) 1200℃(2192℉)
Permanent Linear Change on Heating (%)
@950C,24hrs -
@1200C,24hrs -
@1300C,24hrs 3
@1350C,24hrs -
Thermal Conductivity (w/m.k)
600℃ -
800℃ 0.12
1000℃ 0.2
Rupture Strength (Mpa)
Thickness≤25mm 0.5
Thickness>25mm 0.2
Chemical Composition (%)
Al2O3 ≥44
SiO2 ≥50
ZrO2 ≥5
Package Carton box or pallet

CCEWOOL® RCF Board LZ 2550

Thickness (mm) 20,25,50 80,100
Density (kg/m3) 280. 300. 320. 350 280. 300. 320
Size (mm) 1200×1000 or customized size

CCEWOOL® RCF Board LZ 2550

Thickness (in) 4/5”,1”,2” 3”,4”
Density (lb/ft3) 17#,19#,20#,22# 17#,19#,20#
Size (in) 47”×40” or customized size

Custom size are available.Contact Us

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Adhere to Strict Quality Control System

CCEWOOL® products have won a number of authoritative certifications, including rach certification, Fraunhofer laboratory certification and CE certification, which fully prove the excellent quality of our products. These certificates are not only a strong guarantee of the quality of our products, but also ensure a worry-free process for your order. If you need to know more certification details or request relevant certificates, please feel free to contact us!

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    Our warehouses located in Charlotte, USA, and Toronto, Canada, are well-equipped with ample stock, enabling us to offer efficient and convenient delivery options to our customers throughout North America