Aramid (NX) Needle Felts 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.

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  • Product Description
  • Specifications
  • Application
  • Ordering Information

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 Materials NX-Aramid
Scrim 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 CD 137 (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) Continuous 400 (204)
Surge 465 (240)
The data are based on laboratory conditions. 
Testing based on specific operating conditions of each installation is recommended.

Power Generation

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Food & Beverages

Custom OEM Applications

Customized per order