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Aramid (NX) Needle Felts

Using the highest quality fiber materials and world-class needling techniques and equipment, HL Filter manufactures a wide range of Aramid (NX) needle felts with high dust-holding capacity and good air permeability. In general Aramid tends to be gradually degraded under hostile flue gas conditions. Consequently filter media made of m-Aramid are frequently processed with an additional protection against acids and hydrolysis.
Bulk Roll Goods: weight, thickness, density, roll width, and roll length are customized at your request.
  • Product Details





Features & Benefits

High termperature needle punched felt

Excellent resistance to abrasion 

Good resistance to alkalis under most condition 

Most mineral oxides cause degradation and partial decomposition.

Aramid withstands common organic solvents very well. Some phenolic compounds cause solubility. 

Continuous operating temperature 400℉ (204°C)

Best used in dry conditions at high temperatures


Fiber MaterialsNX-Aramid
Standard Finish Options
(Special surface treatments available)
Heat Set, Singed, Glazed, PTFE membrane, Water and oil proof
oz/yd² (g/m2)
11.80-17.70 (400-600)

   Inch (mm)
0.071-0.095 (1.8-2.4)
Air Permeability
 CFM@ ½" W.G125PA
 (m³/m².min@200PA )
21-50 (10-24)
  Tensile Strength
 lb/in (N/5CM)
Warp MD 103 (900)
Weft CD137 (1200)
Tensile Elongation (%)Warp MD ≤25
Weft CD≤45
Thermal Shrinkage (%) at max continuous temp.Warp MD ≤1
Weft CD≤1.5
Max. Operating Temperature  oF (oC)Continuous400 (204)
Surge465 (240)
The data are based on laboratory conditions. 
Testing based on specific operating conditions of each installation is recommended.


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Chemicals & Pharmaceuticals 

Metals & Foundry

Food & Beverages 

Custom OEM Applications

Ordering Information

Customized per order

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