Product Information Sheet
Fiberfrax Felt Products庐
Introduction
Fiberfrax庐 Lo-ConTM felt and Duraset庐 felt are unique product
forms in the Unifrax Corporation鈥檚 extensive ceramic fiber
product family. Felt products extend the performance of
Fiberfrax papers in a product form with lower densities and
increased mat thickness. Felt products are compressible but
resilient; they conform to irregular surfaces yet have sufficient
integrity to hold their shape in gaskets and formed parts.
Both felt grades are wet laid, uniform, ceramic fiber mats
which have been impregnated with a thermosetting resin.
In Lo-Con felt, this resin has been precured to produce a
semi-flexible rolled sheet available in different densities and
thicknesses. The binders in Duraset have been left uncured
so they can be molded under heat and pressure to retain a
complex shape after processing.
The organic binders remain functional at low and
Fiberfrax庐 Duraset庐 Felt
moderate temperatures (to 650掳F); however, the core
ceramic fiber materials will provide consistent performance Fiberfrax Duraset is a lightweight mat made from spun
at temperatures well in excess of 2000掳F, providing excellent Fiberfrax ceramic fibers which have been impregnated with
thermal insulation in a wide range of applications. a thermosetting resin. Supplied in uncured form, it can be
formed with the simultaneous application of pressure and
Fiberfrax庐 Lo-Con鈩? Felt heat to achieve complex shapes of rigid consistency for
Fiberfrax Lo-Con felt is a lightweight, flexible batting created thermal and acoustical shielding.
from Fiberfrax Bulk ceramic fibers interlocked to form a Use of Fiberfrax spun fibers allows for production of parts
strong, resilient insulation. It is manufactured by a unique with severe draws without tearing during the forming process.
wet felting process which removes unfiberized particles to Duraset felt is an excellent insulator with a high temperature
produce a clean, efficient ceramic fiber felt insulation. use limit. If wet by water or steam, thermal and physical
A small amount of non-flaming organic binder is added to properties remain unaffected after drying. Duraset felt is
provide improved handling properties for easier installation unaffected by most chemicals except hydrofluoric and
in applications where organic burnout at low temperatures phosphoric acids and concentrated alkalies.
is acceptable. Note that Fiberfrax Duraset felt is a nonstandard product.
Please contact your Fiberfrax distributor or Unifrax Customer
Binder Free Lo-Con Service for product availability and pricing.
Lo-Con felt is also available in a binder free form,
Lo-Con Blanket, for applications where organic burnout
is unacceptable. Note that Binder Free Lo-Con Blanket is
a nonstandard product. Please contact your Fiberfrax
distributor or Unifrax Customer Service for product availability
and pricing.
Refer to the product Material Safety Data Sheet (MSDS) for recommended work practices and other product safety information.
Product Line Advantages Typical Applications
Fiberfrax ceramic fiber felts provide unique advantages in solving
Lo-Con
thermal management problems. These advantages include:
鈥? Formability 鈥? Exhaust Duct Insulation
鈥? Flexibility 鈥? Commercial Appliances
鈥? High temperature stability 鈥? Home Security Boxes
鈥? Low thermal conductivity 鈥? Expansion Joints
鈥? Low heat storage 鈥? Domestic Appliances
鈥? Weight reduction 鈥? Gasketing and Sealing
鈥? Thermal shock resistance
Duraset
鈥? High heat reflectance
鈥? Automotive Exhaust Heat Shield
鈥? Excellent corrosion resistance
鈥? Commercial Fire Protection Applications
鈥? Easy to wrap, shape, and cut
鈥? Aerospace Heat Shielding
Typical Product Properties
Typical Product Parameters
Lo-Con Duraset
Lo-Con Duraset
Temperature Grade: 2300掳F (1260掳C) 2300掳F (1260掳C)
Melting Temperature: 3200掳F (1760掳C) 3200掳F (1760掳C) Chemical Analysis
Recommended SiO2 50-55% 50-55%
Operating Temperature: 2300掳F (1260掳C) 2300掳F (1260掳C) Al2O3 40-45% 40-45%
2.73 gm/cm3 2.73 gm/cm3
Specific Gravity: Others < 5% < 5%
Color: Tan Yellow/Tan LOI (Loss on Ignition)
Cure Temperature: N/A 400掳F-450掳F Total 4% 9%
Cure Time: N/A 1.5 - 2 minutes Fiber Index 70% 70%
4, 6 lbs/ft3 9.5 lbs/ft3
Nominal Core Density
The recommended operating temperature of Felt is determined by
Product Dimensions*
irreversible linear change criteria, not melting point.
Width 24", 48" 24"
Data are average results of tests conducted under standard 121鈦?2', 25', 50'
Length 48"
procedures and are subject to variation. Results should not be 1
鈦?4", 1鈦?2", 1" 3
Thickness 鈦?4"
used for specification purposes.
*For availability of nonstandard sizes, contact our Customer Service
Department at 716-278-3800.
For additional information about product performance or
to identify the recommended product for your application,
Press-formed parts made from Fiberfrax Duraset felt.
please contact the Unifrax Application Engineering Group
at 716-278-3888.
Form C-1422 Unifrax Corporation
Effective 7/01
Corporate Headquarters
漏 2001, Unifrax Corporation
All Rights Reserved 2351 Whirlpool Street
Printed in USA
Niagara Falls, New York 14305-2413
Page 2 of 2
Telephone: 716-278-3800
The following are registered trademarks of Unifrax Corporation: Fiberfrax, Lo-Con, Duraset.
Telefax: 716-278-3900
The test data shown are average results of tests conducted under standard procedures and
are subject to variation. Results should not be used for specification purposes.
Internet: www.unifrax.com
Email: info@unifrax.com
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