Nomex® Meta-Aramid: Heat & Flame Resistant


Key Features of Nomex® Meta-Aramid:

  • Excellent heat & flame resistance 
  • High chemical resistance
  • Low thermal shrinkage
  • Self-extinguishing flame retardant properties
  • Soft-hand yields good textile properties

Originally called HT-1, Nomex® was first developed in the 1960’s and made commercially available in 1967 by DuPont™.  It was first used as fabric for race-car driver suits.

Similar to Kevlar®, Nomex® is an aromatic polyamide.  The “Meta” linkage position of the aromatic groups differs from that of Para-Aramids.  The chemical bonds are zig-zag in configuration, resulting in a lower tensile and modulus fiber compared to Kevlar®. 

Nomex® is flexible and higher in elongation however, making it an ideal textile yarn for fabrics. 

FIBER-LINE® Enhancing Processes for 



Common Types & Deniers
T-430: Filament Yarn
Deniers: 200, 1200, 1600, 2400

Nomex® Meta-Aramid Bare Fiber Performance

Abrasion Resistance
Yarn on Yarn Abrasion
Ultraviolet (UV) Resistance
Flame Resistance
Chemical Resistance (Acid)
Chemical Resistance (Alkali)
Chemical Resistance (Organic Solvent)

Chemical Resistance to Acid: Strength loss in H2SO4 below acid dew point.
Chemical Resistance to Alkali: Good at room temperature but degraded by strong alkalis at high temp.

Nomex® Meta-Aramid Data

Standard Modulus

Property UOM Value
Breaking Tenacity g/d 5.0
Specific Gravity Ratio 1.38
Elongation @ Break % 30.0
Tensile Modules g/d 125
Moisture Regain* % 4.5
Shrinkage*** % .4
Melt Point N/A

* Equilibrium moisture regain @ 55% RH    ** Creep @ 40%-58% ultimate tensile strength    *** Shrinkage in dry air @ 177 C for 30 minutes

This data is provided for informational purposes only, and does not constitute a specification. FIBER-LINE makes no warranty, express or implied, that the product conforms to these values. Contact your FIBER-LINE representative for exact product details which conform to your specific requirements.