Aramid (Nomex) needle felt
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Aramid (Nomex) needle felt

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Aramid, which is also referred to as Nomex©, is extensively utilized in high-temperature situations due to its exceptional ability to withstand wear and its capacity to function effectively at temperatures up to 204°C. The aramid filter bag is a filter bag designed for use in pulse jet baghouse dust collectors in high-temperature environments. Aramid is more economical and superior compared to other heat-resistant fabrics. It exhibits excellent strength, resistance to abrasion and folding, and is also resistant to acids.

Fiber Characteristic

Tensile Strength
Chemical Acids Alkali Resistance Supports Combustion Continuous Temp(℃) Surge Temp (℃)
 Polypropylene Excellent Excellent Excellent Excellent Yes  93  93 
 Nylon Excellent Excellent Poor  Excellent Yes  93  93 
Good  Good  Very Good  Fair  Yes  127  140 
 Copolymer Acrylic Average  Fair  Good  Fair  Yes  110  120 
 Polyester Excellent Excellent Fair  Fair  Yes  135  149 
Aramid Very Good  Excel  Fair  Poor  NO 191  218 
PTFE Average  Fair  Excellent Excellent NO 232  260 
 Fiberglass Excellent Fair  Good  Fair  NO 260  288 
PPS Very Good  Excel  Excellent Very Good  NO 191  218 
P-84 Very Good  Excel  Very Good  Fair  NO 260  288 

Layer: Aramid

Scrim: Aramid

Available weight: 350g/m2, 400g/m2, 450g/m2, 500g/m2, 550g/m2, 600g/m2

Treatment: Heat-set, singed and glazed, Water & Oil repellent, PTEF finish, e-PTFE membrane laminated

Service temperature: 200℃ continue, 240℃ maximum

Regular width: 2m-2.2m

Application: Asphalt, Cement, Steel, Power plant, Waste incineration, Chemical, etc.

Spec   Item Layer/Scrim  Weight(g/m2)  Air
Thickness (mm) Warp Tensile Strength (N/50mm) Weft Tensile Strength (N/50mm) Warp Elong(%) Weft Elong(%) Treatment Continuous Temp
500HA  Nomex/Nomex 550±5% 21±25% 2.1±0.2 ≥800 ≥1200 ≤25 ≤50 Heatset  singed & glazed   ≤200
500KA Nomex/ Nomex 550±5% 18±25% 2.1±0.2 ≥800 ≥1200 ≤25 ≤50 PTFE finished  ≤200


• With its exceptional heat resistance, it can maintain excellent performance even in temperatures as high as 204℃ under acidic or alkaline conditions.

• It has excellent resistance to weak acids, weak alkalis, and organic solvents.

• Its impressive thermal stability and minimal contraction ensure that the size of the filter pocket remains stable, preventing any damage to the bag cage.

• The outstanding wear resistance and folding endurance make it ideal for various dust structures and quantities, resulting in a longer service life for the filter material.

• Its high resistance to breakage and elongation ratio ensure that the end product has exceptional strength, durability, and injection tolerance.

• Metamax is easy to process, resulting in minimal waste and compatibility with most machines, improving processing efficiency and reducing costs.

• It offers a perfect balance between performance and price, with a high-performance-to-price ratio.

• Its excellent ventilation performance reduces the pressure drop in the dust removal system, saving energy and related costs.

• It is flame retardant.



Q1. What is the packing way for needle felt roll goods?
A: Standard export packing with plastic bag and woven bag.


Q2. What’s the MOQ for each type?  
A: No problem to supply small quantity like 100lm or 50lm because we have stock or regular order for regular types.


Q3. Is it possible to get free sample?
A: Yes. Free sample can be provided by us.


Q4. What about the delivery time?
A: For regular order, within 4 weeks. It depends on the items and the quantity of the order.


Q5. Can you special customized products?
A: Yes, we can design and produce according customer’s request or sample.

For more than 20 years, Hongyuan Envirotech Co., Ltd. has been a leading manufacturer of filter material and filter bags for dust filtration industry. Hongyuan Envirotech has been committed to providing customers best filter material with comprehensive cost performance.

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