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You searched for: Unifrax Fiberfrax Ceramic Fiber Paper 550K Insulation
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Unifrax Fiberfrax Ceramic Fiber Paper 550K Insulation



Fiberfrax® ceramic fiber insulation manufactured by Unifrax Corporation, from alumina-silica materials, offer outstanding thermal and physical characteristics. Exhibiting low thermal conductivity, excellent thermal stability, low heat storage, resistance to thermal shock, excellent corrosion resistance and are easy to fabricate and install. Available in your choice of square foot sizes (please order in 4 square foot increments - example: 1' x 4') Also available as a 100 square foot boxed roll (48" x 25').

1/4" thick x 48" wide ceramic fiber insulation rated to 2300°F (1260°C). It is a flexible but fairly rigid insulation and is easy to cut into various shapes. It is made from an unwashed high purity ceramic fiber. Its higher density and binders give performance properties ideal for most refractory-type applications.



  • Color: White

  • Soft Point: 3260°F (1760°C)

  • Density (PCF): 12 lb./ft3

  • Fiber Index: (% Wt.): 50

  • Thermal Conductivity (Btu in/hr ft2°F) @500°F: 0.40, @1000°F: 0.79, @2000°F: 1.29

  • Composition: (Al2O3: 49.2%, SiO2: 50.5%, Na2O3: 0.2%, Fe2O3: 0.06%, Others: 0.04%)



The Fiberfrax 550K paper Will Generate Smoke and Trace Element Outgassing during the initial exposure to temperatures above 450°F.

Product Information Sheet
Material Safety Data Sheet
Item CodeDescriptionVendorQuantity
550K 1/4in Insulation Paper by Sq. Ft.
Ceramic Fiber Paper Insulation - 1/4 Inch Thick - Sold In Square Foot Increments cut from full roll box (100 square foot, 48 inch x25ft) - White Color - 12 LB/Cu.Ft Density ** Please Note That All Cut Insulation Sales Are Final - No Returns Are Allowed **
Mor Electric