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High Silica Needle Mat

High Silica Needle Mat

High silica needle mats are used as insulation in high temperature applications like heaters, furnaces, foundry devices, exhaust systems, catalytic converters etc. Similar to ceramic fibers, high silica needle mat is used for applications whose temperature is too high for e-glass (650 degrees C and above). However, ceramic fiber should not be used if the high temperature application vibrates. Ceramic fiber blankets will lose much of their thickness and density when the product's shot and short fiber shakes to the bottom of the blanket due to vibration. Silica mats do not have this disadvantage.

High silica needle mat starts where other fiber glass mats have their limits. It is designed to be used in high temperature surroundings of up to 1800 oF (982 oC) continuous heat. It can even last temperature peaks up to 2300 oF (1260 oC).

Furthermore the high silica needle mat offers enhanced tensile strength, stiffness, and radar transparency to standard E-Glass mats. Of course it embraces all the benefits of our line such as excellent thermal, acoustic, and electric insulation features, incombustibility, and no decomposition.

MOWCO’s high silica needle mat is available in thicknesses between 1/4 inch and 1 inch.

Property of high silica needle mat:

  • Insensible to high continuous operating temperatures up to 1800 oF (982 oC);
  • Will endure short temperature peaks up to 2300 oF (1260 oC);
  • Higher tensile strength and stiffness than E-Glass;
  • U.L® listed 0-flame spread, 0-smoke generated;
  • Excellent thermal, acoustic, and electric insulation features;
  • Excellent vibration resistance, will not powder;
  • Non-alkaline (<0.01%), low chlorides and fluorides.
High Silica Needle Mat

High silica needle mat available (other sizes upon request)

Thickness Density Max. Width
1/4 inch
(6.35 mm)
9-10.5 lbs/ft3
(144-170 kg/m3)
90 inch
(228.6 cm)
1/2 inch
(12.7 mm)
9-11 lbs/ft3
(144-180 kg/m3)
90 inch
(228.6 cm)
1 inch
(25.4 mm)
9-12.5 lbs/ft3
(144-200 kg/m3)
60 inch
(152.4 cm)

Chemical Composition of high silica needle mat

Main Element Percentage
Amorphous 96-99%

Data sheet of high silica needle mat

Thermal Conductivity (K = Btu x in / hr / sq.ft. x ft. / deg F)
500 oF
(260 oC)
0.44
1000 oF
(538 oC)
0.79
1500 oF
(816 oC)
1.38
1800 oF
(982 oC)
1.91
Temperature Limit
Continuous Use 1800 oF
(982 oC)
Intermittent 2300 oF
(1260 oC)
Melting Point 3100 oF
(1704 oC)
Tensile Strength Of Single Filament (psi)
-310 oF
(-190 oC)
1,200,000
700 oF
(371 oC)
545,000
1000 oF
(538 oC)
350,000
Average filament diam-eter (μm) 6-9
Color white
Thickness 1/4 inch to 1 inch
(6mm to 25mm)
Density (Depending On Thickness) 9-12.5 lbs/ft3
(144-200 kg/m3)