RED SEAL ELECTRIC IS YOUR

Refractory Insulating Material Supplier and Fabricator

Red Seal Electric is a leading supplier of refractory insulating materials engineered for high-temperature, high-pressure, and chemically harsh environments. Our product line supports industrial furnace insulation, kiln linings, boiler lagging, and high-voltage electrical systems requiring reliable thermal barriers.

Refractory Insulating Material Properties

Refractory insulating materials are engineered to withstand extreme heat, pressure, and chemical exposure. These high-temperature insulation materials retain their strength and stability at temperatures exceeding 1000°F (538°C), making them essential for demanding thermal applications. Refractory materials are commonly used in furnace linings, kiln insulation, boiler systems, incinerators, and other industrial high-heat environments. Whether you're insulating electrical components or fabricating thermal barriers, refractory insulation offers superior heat resistance, durability, and energy efficiency.

View Our Stock refractory Insulating Materials

Featured
RS-100
RS-100

A ceramic fiber reinforced structural alumina composite material.

Fiberfrax® Duraboard®
Fiberfrax® Duraboard®

Ceramic fiberboard. Available in different grades from approximately 2300°F to 3000°F.

SG-70
SG-70

A non-asbestos structural ceramic refractory reinforced with continuous fibers to increase the toughness, reliability and overall performance of the ceramic composite.

Super Firetemp® X
Super Firetemp® X

An inorganic, incombustible material composed primarily of lime, silica and reinforcing fibers. The material is 40 pcf (641 kg per m3) and rated to 1,700°F.

CS85
CS85

A high temperature replacement for asbestos transite. It offers high strength and electrical resistance combined with minimal shrinkage for applications up to and exceeding 1800º F and has a density of 85 pcf.

Marinite P
Marinite P

A non-asbestos, incombustible self-supporting board that provides high insulating values, fire safety and exceptionally high compressive strength. The material is rated for up to 1800º F and has a density of 60 pcf.

Marinite I & Marinite M
Marinite I & Marinite M

A non-asbestos, incombustible material manufactured in panel form. Designed to combine structural strength and high thermal insulating values. The material is rated for up to 1350º F and has a density of 46 pcf.

Marinite A
Marinite A

A strong, machinable, non-asbestos, inorganic board insulation for conveying, containing, handling and forming molten aluminum and other non-ferrous metals. The material is rated for up to 1500º F and has a density of 65 pcf.

Industries Using our Refractory Materials

  • refractory insulation used in power plants and turbines

    Power Generation

  • refractory insulating materials for steel foundries and metal processing

    Steel and metal foundries

  • ceramic fiber and refractory materials for glass production

    Glass Manufacturing

  • refractory insulation for aerospace thermal protection systems

    Aerospace & Defense

  • electrical refractory insulating materials for high-voltage applications

    Electrical Equipment

  • refractory insulation used in industrial ovens and heat treatment

    Heat Treating & Kilns

Your trusted partner for refractory Insulating Material Distribution and fabrication

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Frequently Asked Questions about refractory insulators

  • We supply a wide range of refractory insulating materials including ceramic fiber, mica sheets, calcium silicate, insulating boards, thermal wraps, and custom-cut gaskets for high-temperature applications.

  • Refractory insulation is essential for industries such as power generation, metalworking, glass manufacturing, aerospace, automotive, and electrical equipment. Anywhere high-heat resistance and thermal protection are needed, these materials apply.

  • Yes — Red Seal provides precision fabrication services for refractory insulation. We can cut, laminate, or assemble materials to meet your exact specifications and thermal requirements. If you’re interested in purchasing Refractory Insulating Material or looking for fabrication, contact the Red Seal team by filling out our quote form.

  • Our high-temperature insulating materials are rated for continuous use at temperatures ranging from 1000°F to over 2000°F (538°C to 1093°C), depending on the product.

  • You can contact our team directly to request a quote or place an order. We offer both raw refractory materials and custom-fabricated solutions. Call us, email us, or submit a request through our website to get started.