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Insulating Firebrick

Insulating Firebrick are a low density firebrick used for insulation purposes in kilns, furnaces, incinerators, boilers, and other high temperature process equipment.

Armil CFS stocks a wide variety of insulating brick manufactured in the USA by BNZ Materials.

BNZ Materials manufactures high quality firebrick in their Zeienople, PA plant that originally manufactured JM insulating firebrick. JM insulating firebrick are now called BNZ insulating firebrick. Most other companies offering JM insulating brick are using the JM trade name only. They are not manufacturing using the JM process. Most of this brick is manufactured overseas.

Following Grades are in stock in 9” x 4-1/2” x 2-1/2” straights. Please call for other available sizes

  • BNZ 23HS
  • BNZ 26
  • BNZ 28
  • BNZ 3000
  • BNZ 32

Specialty Grades in stock

  • BNZ C22Z
  • BNZ 26-60
  • PA 23 Coarse
  • PA 26 Coarse

Bricks available by special order

  • BNZ 2000
  • PA 2000
  • BNZ 2500
  • BNZ 26 HS
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50th Year Anniversary of ArmilCFS Heat Treating Solutions

Armil CFS, Inc. proudly celebrates 50 years of serving high temperature industrial process markets across North America.  We continue the legacy established by Richard O. Marek in 1968 by delivering engineered heat treatment solutions – providing state of the art refractory equipment such as industrial furnaces and refractory supplies manufactured with sound material choices and exceptional workmanship.  Many thanks to all our customers, employees and vendors we’ve worked with for the past half-century!

Please view our images below…

The Armil CFS team pose for our 50-Year photo. Left hand-held
photo is of Dick Marek, founder of Armil CFS; center hand-held
photo is of Walter Parduhn, past president and the owner of
Armil. 50 years of successful heat treating solutions for industrial needs!
One of our beautiful and rugged Car Bottom furnaces
An Armil CFS Pusher furnace in action
A Roller Hearth Burnout furnace installed efficiently at a client location
A Burnout / Preheat Box-Style furnace glows red-hot with power

Read the INCAST article on our 50th anniversary here.

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DynaGuard™ Flexible Microporous Insulation for High-Heat Insulating Solutions

UntitledImagine a quilted blanketing material with “pockets” filled with microporous insulation and you have the basic concept of our flexible microporous insulation solution – a flexible “shell” of thermal-resistant cloth that houses this compact insulating material for use in high-heat or compact scenarios requiring less space usage for insulation – often for use as pipe or duct insulation since it can be easily wrapped around objects for heat protection.

DynaGuard microporous materials available from Armil CFS are comprised of a combination of fumed silica, reinforcing fibers, and special opacifiers to minimize transmission of infrared radiation. These insulating materials possess extremely low thermal conductivities for high-heat scenarios in industrial and manufacturing settings. Flexible microporous insulation offers the additional advantage of very easy-to-install adaptability.

More on Microporous Insulation

DynaGuard Flexible Insulation Systems represent one of Armil CFS many microporous products for primary use in industrial and commercial applications. Each DynaGuard Flexible system is a flexible, textile-encased, comparatively dense material with high compression resistance and exceptional strength, and its superior thermal performance allows the maximum amount of thermal protection to be provided within minimum space and weight requirements.

DynaGuard Flexible insulation systems are also specially formulated to minimize heat transfer via conduction, convection and radiation through the material by use of the following:

  • Microporous structure: the microporous structure of the DynaGuard Flexible system inherently minimizes the possibility for air current convection through the material, as void spaces too small forair currents to exist form between the core material components.
  • Ceramic powders with intrinsically low thermal conductivity: the microporous core materials used in the manufacture of DynaGuard Flexible systems possess a thermal conductivity even lower than that of still air, and minimize the solid conduction of energy through the material.
  • Special opacifiers: the introduction of special opacifiers into the DynaGuard Flexible insulation formulation ensures that the transmission of infrared radiation through the material is kept to the lowest possible levels.

The DynaGuard Flexible microporous core material is a 1,800ºF continuous-use formulation, and is compressed into a uniform thickness and density to ensure the proper distribution of the core material. After compression, the material is quilted on 1″ square centers with high-temperature thread in order to provide both flexibility and greater vibration resistance for the material. In addition to the microporous core, DynaGuard Flexible systems are supplied encased in a high-temperature textile shell. This shell provides additional structure, strength, ease of handling and installation, and consistent distribution of the core material, and may also be used to increase the overall composite temperature use limit of the assembly as specified by individual customer needs.

DynaGuard Flexible insulation systems are supplied standard at 16 lbs/ft3 density, 36″x 36,” in thicknesses of 1/8″ to 1/2,” and with a fiberglass textile shell (1,000ºF use limit). Other densities, sizes, thicknesses and cloth facings are available upon request.

DynaGuard Flexible Insulation Systems Advantages

Lowest Thermal Conductivity

Because DynaGuard Flexible systems inherently possess a thermal conductivity lower than that of still air, even at elevated temperatures, they are ideal in environments where materials with low thermal conductivity, thermal diffusivity and heat storage are necessary.

Space and Weight Savings

Because smaller amounts of DynaGuard Flexible insulation are needed for thermal management, it is an ideal material for industrial and commercial applications where considerable space and/or weight savings are valuable in increasing capacity or efficiency without sacrificing the thermal performance of the system.

High Temperature Capability

DynaGuard Flexible insulation systems can be manufactured to meet continuous high-temperature environments up to 1,800ºF, but are also capable of performing in intermittent exposure to 2,000ºF temperatures.

Want to learn more about DynaGuard’s flexible microporous insulation as available from Armil CFS? Please visit this PDF for more information today!Untitled

If you have more questions on this unique insulting solution, please reach out and contact us at your convenience. Thanks for visiting our website.

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DynaGuard™ Microporous Insulating Boards Offer Macro Benefits

UntitledThe value of microporous insulation from Armil CFS is two-fold. First, our microporous insulation is a VERY efficient insulating material for high-temperature furnaces, kilns and oven linings. Indeed, microporous insulation is the most efficient insulating material we feature on our website. Secondly, due to the “micro porous” nature of this insulating material, a thinner layer or amount can be used than with ordinary insulation made from ceramic fiber. Used in high-heat or tight and compact scenarios, microporous insulation boards are basically an insulating powder that has been compressed into a rigorous and efficient thermal refractory material for smaller spaces.

DynaGuard microporous core materials are composed of a combination of fumed silica, reinforcing fibers, and special opacifiers to minimize transmission of infrared radiation. Armil CFS offers a variety of microporous insulations for a large range of high temperature industrial and commercial applications.

More on Microporous Insulation Boards

Each DynaGuard insulating board is a rigid, comparatively dense material with high-compression resistance and exceptional strength, and its superior thermal performance allows the maximum amount of thermal protection to be provided within minimum space and weight requirements.

DynaGuard Board systems are also specially formulated to minimize heat transfer via conduction, convection and radiation through the material by use of the following:

  • Ceramic powders with intrinsically low thermal conductivity: the microporous core materials used in the manufacture of DynaGuard Board systems possess a thermal conductivity even lower than that of still air, and minimize the solid conduction of energy through the material.
  • Microporous structure: the microporous structure of DynaGuard insulating boards inherently minimizes the possibility for air current convection through the material, as void spaces too small for air currents to exist form between the core material components.
  • Special opacifiers: the introduction of special opacifiers into the DynaGuard Board formulation ensures that the transmission of infrared radiation through the material is kept to the lowest possible levels.

The DynaGuard™ Board microporous core material is a 1,800ºF continuous-use formulation, and is compressed into a uniform thickness and density to ensure the proper distribution of the core material. In addition to the microporous core, DynaGuard Board systems are also supplied standard encased in a shrink-wrap shell. This shell provides additional minimization of dusting from the material during transportation and handling, adds a degree of moisture resistance during installation, and allows for close fitting or butt-jointing of multiple DynaGuard Board parts with only minimal spacing between the materials.

DynaGuard insulating boards are supplied standard at 18 lbs/ft3 density, 18″x 24″, and in thicknesses of 1/2″ to 1-1/2.” Other densities, sizes, and thicknesses are available upon request.

DynaGuard Board Insulation Systems Advantages

Lowest Thermal Conductivity

Because DynaGuard Board systems inherently possess a thermal conductivity lower than that of still air, even at elevated temperatures, they are ideal in environments where materials with low thermal conductivity, thermal diffusivity and heat storage are necessary.

Space and Weight Savings

Because smaller amounts of DynaGuard Board are needed for thermal management, it is an ideal material for industrial and commercial applications where considerable space and/or weight savings are valuable in increasing capacity or efficiency without sacrificing the thermal performance of the system.

High Temperature Capability

DynaGuard insulating board systems can be manufactured to meet continuous high temperature environments up to 1,800ºF, but are also capable of performing in intermittent exposure to 2,000ºF temperatures.

Easy Fabrication

Shapes can be fabricated in the field by various cutting methods, but Armil CFS also provides a virtually limitless range of custom pre-fabricated and intricate shapes upon request.

To learn more about these efficient, durable and COMPACT insulating boards featuring microporous construction, please see our PDF here. Reach out to Armil CFS for more information on this compact, high insulation material available today.

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Insulfrax® and Isofrax® Low Biopersistence Insulating Boards and Blankets Offer High-Heat Protection

UntitledInsulfrax and Isofrax are low biopersistence insulation materials that are manufactured to meet European regulatory requirements (Directive 97/69/EC) for man-made vitreous fibers. As LOW bio-persistence products, these materials break-down, decay and leave the human body quickly– a huge boon for health concerns compared to the damage done by asbestos in the past as a thermal refractory material. Insulfrax and Isofrax low biopersistence, high-temperature insulation materials are used in ovens, furnaces, kilns, duct linings, wood fired ovens, and as chimney insulation – designed to be bio-soluble so that contact with the human respiratory system does not prove damaging to the body over time.

Isofrax is based upon a unique, patented silica-magnesia chemistry for high-heat needs and low biopersistence requirements, while Insulfrax’s high heat resistance comes from a calcium, magnesium and silica chemistry for high thermal protection.

Armil CFS carries biosoluble blankets for use in high-temperature applications where ceramic fiber cannot be used. Blankets are inorganic and provide excellent thermal insulation at elevated temperatures. These blankets are needled to provide good handling strength.

Untitled1]Insulfrax S® blankets were developed from a calcium-magnesium- silica chemistry to provide thermal insulation at continuous temperatures to 2000°F. Isofrax blankets have a unique, patented silica-magnesia chemistry designed for high-temperature applications up to 2300°F. See our PDF here for more info on low biopersistence blankets featuring Insulfrax and Isofrax.

Isofrax insulating boards and shapes are vacuum-formed from high temperature silica-magnesia fibers and binders. Insulfrax insulating boards and shapes are vacuum-formed from calcium, magnesium, silica fibers and binders. Both products do not contain RCF fibers. Isofrax and Insulfrax insulating boards offer high temperature stability, uniform density, low thermal conductivity, excellent resistance to thermal shock. Insulfrax boards also offer superior wetting resistance to molten aluminum. Both products contain organic and inorganic binders that will burn out during initial heat up. Read about the physical properties of both Isofrax and Insulfrax insulating boards with low biopersistence from Armil CFS here.

Do you have questions about biopersistence and our insulation products? Wish to learn or understand more on this topic? Our knowledgeable team can help you with whatever you need – please contact us here.

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Ceramic Fiber Blankets Have High-Heat Insulation Covered

UntitledArmil CFS proudly features Fiberfrax ceramic fiber blankets for many high-heat protection and thermal management applications in a vast array of industries. Ceramic fiber blankets are a Low-density insulation used in all types of high temperature equipment – these blankets offer flexibility, light weight and various thicknesses as well as ease-of-use within plants, refineries and factories. From use in kilns, boilers, furnaces and ovens to usage as flexible pipe insulation, expansion joint seals and stack and duct linings, ceramic fiber blankets provide insulation and protection against high heat without the dangers associated with asbestos products.

About Ceramic Fiber Blankets

Armil CFS carries a wide range of Fiberfrax ceramic fiber blankets for refractory applications up to 3000°F (1650°C), in various densities, widths and thicknesses for your purchase. These blankets are designed to withstand intense heat as well chemicals attack and are lightweight for easy installation as needed within industrial settings.

Ceramic fiber blankets are lightweight, efficient insulators highly resistant to thermal shock and chemical attack. Fiberfrax Durablanket® products are spun from extra-long, high-purity Fiberfrax® ceramic fibers, producing a blanket with exceptional handling strength. Durablanket is most often used for oven, furnace, and kiln linings, duct wrap, expansion joints, and high temperature gasketing. Moist Pak D blankets are further impregnated with inorganic bonding agents resulting in a hard rigid structure upon drying. Moist Pak D is used where a more erosion resistant lining is required. Fibermax® blankets are high-alumina blankets manufactured using polcrystalline ceramic fibers for high-heat resistance. Fibermax blankets have excellent characteristics for use in furnaces in kilns at extreme temperatures.

Interested in learning more about these optimal tools for refractory usage with portability always in mind? Visit our ceramic fiber blankets PDF for stats and composition information. You can also reach out to our trained staff for more information on applications by industry, pricing and availability.

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High-Heat Industries Need (Ceramic) Fiber Too!

It’s become common knowledge that humans have a healthier and even longer life when they consume fiber for digestive purposes on a regular basis. We couldn’t help but throw out the pun on the refractory need for ceramic fiber in the tile of this blog post, but this important material is truly essential for thermal management and protection within industries relying on high-heat technologies for manufacturing processes. Whether your business is involved with forging, welding or any heat treating technologies, or your company is involved with aerospace, appliances, refineries, heat shielding for oil and natural gas transportation, etc., ceramic fiber is an all-important and essential component of many manufacturing operations and many end products as well.

UntitledArmil CFS proudly distributes AND fabricates Unifrax Fiberfrax® ceramic fiber products in many different forms for various needs. These ceramic fiber products are manufactured from alumina-silica materials and will exhibit high temperature stability in manufacturing applications up to 3000°F.

We group our ceramic fiber into seven basic product lines – please follow the links below to learn more about each refractory product that proudly bears the Fiberfrax name:

Interested in learning more about our many ceramic fiber products

fabricated with Fiberfrax? Contact Us today to get all the details.

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Marinite® Calcium Silicate Boards Are Formable, and Formidable!

UntitledCalcium silicate is a white, free-flowing powder derived from limestone and diatomaceous earth combined together. Calsil is commonly used as a safe alternative to asbestos products for high temperature insulation materials, and is also used for passive fire protection. When compressed into boards, Marinite takes on a life of its own and has very handy application capacities in numerous industries.

Very popular as a structural insulation material, Marinite is used in stoves, commercial baking ovens across the country, as back-up insulation in high-temperature furnaces, and for personal protection in high-heat settings as well as for high-temperature electrical insulation. Marinite can be found in all heat-treating industries as well as within the petrochemical industry, aluminum industry, glass and ceramic industry, and even within the world of appliance manufacturing.

More on Marinite Boards

Armil CFS offers Marinite insulting boards made from calcium silicate that combine high strength with exceptional thermal insulating capabilities in high-heat settings. Our Marinite boards can be made into fabricated or machined shapes and are often used in a variety of heat processing, fire protection, and electrical resistance industrial applications. Marinite I, Marinite P, Marinite A, and CS85 are available from Armil CFS – each has its own set of advantages, from excellent strength and electrical resistivity at temperatures up to 1800°F, insulating efficiency, to high compressive strength or non-wetting to molten aluminum.

Check-out the Marinite boards specs and information here. If you have more questions on usage or applications that have not been addressed in the PDF, or if you’d like to purchase Marinite from Armil CFS, please contact us to speak to a refractory expert.

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Refrasil® Silica Cloth Has High-Heat Environments Covered

UntitledThis made-in-the USA silica textile protects and insulates in high-heat scenarios in many industrial applications. Refrasil adds a level of thermal control due to its low heat-storage capacity. In high-temperature industries, such as within chemical process/refining, steel production, power generation, metal processing and fabrication, shipbuilding, glass production, and chemical production, Refrasil cloth can be used as furnace curtains, removable insulation blankets, welding cloth, personnel protection and heat shielding. The sky’s the limit with Refrasil silica cloth thanks to this utilitarian material’s vast adaptability!

More on Refrasil Cloth

For high-heat applications within industrial settings, silica-based cloth is a smart solution that is easy to work with. Refrasil offers several styles of silica cloth for use where thermal performance is required. Armil CFS proudly stocks and sells Refrasil silica cloth to customers around the world.

Refrasil products are high-strength, acid-leached, amorphous silica textiles made to maximize both temperature resistance and physical strength. All Refrasil silica cloths have silica content of at least 96%. This silica content gives Refrasil silica cloths a true 1800ºF use limit. Refrasil Cloths are available in high-strength UC series, preshrunk C series, and also in the Irish series for use at temperatures of up to 2300ºF. Refrasil cloth is also available with aluminized, high-temperature silicone, or with an abrasion-resistant coating. Refrasil cloths can be used for welding protection, furnace curtains, etc. – any setting where thermal protection is required and the flexibility and adaptability of cloth is necessary.

Armil CFS’ Refrasil UC and C series have continuous-use temperature thresholds of 1800ºF while the Irish series, as mentioned above, can handle temperatures of up to 2300ºF. Refrasil products can withstand excursions to 2900 ºF with minimal embrittlement and shrinkage. You can learn more on melting points, widths and thicknesses, available coatings, and other stats by viewing our Refrasil silica cloth PDF here.

If you’d like to place an order with us, or have other questions on the many uses and capabilities of Refrasil, our knowledgeable staff is on-hand to assist you and to address any hot topic on your mind. Contact Us today to get started, please.

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Insulating Firebrick – the Building Blocks of Refractory Thermal Management

For high temperature industries, including heat treating, forging, ceramics & glass production, petrochemical production, and for furnace and oven manufacturing, insulating firebrick provides energy conservation, management, and greater product conformity. Lightweight insulating firebrick helps to increase the efficiency of furnace linings – allowing high temperature furnaces, kilns, and ovens to heat up quickly while keeping the outside shell at a lower temperature. The ceramics industry particularly enjoys our insulating firebrick – artists trust our brick within their kilns, while large plants use our brick inside of their furnaces to control interior temperatures while keeping energy costs in line.

More on Insulating Firebrick

UntitledArmil CFS is pleased to offer BNZ Materials’ low-density insulating firebrick used in industrial applications with temperatures of up to 3200ºF. All of the Insulating firebrick we stock is manufactured in the USA!

Our insulating firebrick is low-density refractory brick made from high-purity refractory clays and other ceramic raw materials. Insulating firebrick from Armil CFS offers high strength, low-heat storage, high purity, and accurate sizing for your design and construction requirements.

BNZ Insulating Firebrick

Armil CFS carries several grades of insulating firebrick for use in applications up to 3200°F. Each type is formulated to meet specific thermal and physical requirements, and after firing is machined to precise tolerances. Made from high-purity refractory clays and other ceramic raw materials, these IFB are manufactured to provide a uniform, controlled pore structure. All off the following IFB are low iron.

BNZ 23HS is a high-strength ASTM 23 Grade. The higher strength and density make this brick an excellent choice for furnaces utilizing a controlled atmosphere. These brick are commonly used in heat treating furnaces and artist kilns. C22Z are a higher-strength 2300 ºF rated IFB typically used in load bearing applications or applications in which a stronger IFB is required, BNZ 26 is the standard ASTM Grade 26 used in higher temperature applications, such as in forging furnaces and ceramic kilns. BNZ 28 is the traditional ASTM Grade 28, used in higher temperature kilns and steel reheat furnaces. BNZ 3000 has long been the standard for true ASTM Grade 30 brick. Its low-reheat shrinkage at testing temperature of 2950°F is an indication of its ability to tolerate excursions above normal operating temperatures in applications such as strip annealing furnaces. BNZ 32 is a reasonably priced alternative to bubbled alumina brick in many high temperature applications or where high alumina content is required. All BNZ Insulating Firebrick is manufactured in the USA.

Insulating Firebrick – Coarse

PA series coarse insulating firebrick offers a lower cost alternative to traditional fine-grained insulating firebrick. PA series brick is designed for applications where the lower densities or finer texture or traditional IFB is not required. PA series firebrick meet or exceed the specifications of ASTM C 155 for each listed grad. All PA series insulating firebrick are manufactured in the USA. PA 23 with its low reheat shrinkage is especially well suited for applications such as annealing and reheating furnaces. PA 26 blends excellent density, strength, and temperature stability with low thermal conductivity, making it ideal as back up insulation in high temperature reheat and forging furnaces. It has also been used successfully in many kiln applications.

BNZ 26-60 Insulating Firebrick

Armil CFS also offers BNZ 26-60 fire brick, which meets all requirements of an ASTM C 155 class 26 IFB, with a higher alumina content then the standard 2600 insulating brick. This makes the BNZ 26-60 specially designed for areas where furnace atmospheres require the inertness of a higher alumina product. Applications for the BNZ 26-60 insulating firebrick include atmosphere furnaces used in heat treating, ceramic kilns, incinerators, and cremation retorts.

Hard Firebrick

Armil CFS also features hard firebrick for situations requiring an abrasion-resistant thermal material. High Duty, Super Duty, and High Fired Super Duty fireclay brick are all available for such scenarios.

Our insulating firebrick and hard firebrick are very popular products. If you’re new to their applications and uses or have questions on this fine line of refractory products, please don’t hesitate to contact us for more information.