Nomex Bag Filter (Meta-Aramid)
204 °C Continuous Operation and High Resistance to Pulse-Jet Cycles
The Nomex bag filter (meta-aramid) is a needle-punched felt dust filter that resists pulse-jet shocks and abrasion in high-temperature industrial flue gases.
350–650 g/m²
204 °C
240 °C
5–9
What Is a Meta-Aramid (Nomex) Bag Filter?
Meta-aramid bag filters are a dust filtration medium made by the needle-punched felt method from synthetic meta-aramid fibre that resists high temperatures and mechanical stress. “Nomex” is the well-known brand name for this fibre type. With a continuous operating temperature of 204 °C and high flex abrasion resistance, it is the industry’s standard filtration medium for processes in the 150–204 °C range. In intensive pulse-jet cleaning cycles where the brittle structure of glass fibre falls short, Nomex offers a clearly longer service life.
Nomex fibre keeps its dimensional stability at high temperatures and does not shrink or deform. With moderate chemical resistance (pH 5–9), it offers a reliable, economical solution in applications that combine high temperature and mechanical stress, such as asphalt mixing plants, cement clinker coolers, electric arc furnaces and metallurgical processes.
Product Identity and Technical Summary
Prosestim meta-aramid (Nomex) bag filters are made by needle-punching pure, high-temperature-resistant meta-aramid fibres in the 350–650 g/m² weight range. With a continuous operating temperature of 204 °C and high flex abrasion resistance, they keep the bag intact through intensive pulse-jet cleaning cycles; with the ePTFE membrane option, they offer emission performance of < 10 mg/Nm³ at PM2.5 level.
Key Technical and Structural Features
- Fibre Type
- Meta-Aramid (Nomex) Needle-Punched Felt
- Fabric Structure
- Needle-Punched Felt
- Weight
- 350–650 g/m²
- Continuous Operating Temperature
- 204 °C (under dry operating conditions)
- Peak (Surge) Temperature
- 240 °C (under dry operating conditions)
- Chemical Resistance
- Moderate resistance to acids and alkalis; safe operation in the pH 5–9 range.
- Surface Treatment Options
- Singeing and Calendering
- Water and Oil Repellent Treatment
- PTFE Coating and ePTFE Membrane
- Antistatic Treatment
- Emission Performance
- < 10 mg/Nm³ with ePTFE membrane
- Cleaning System Compatibility
- Pulse-Jet
- Reverse Air
- Shaker
- Service Life
- Approximately 24–36 months, depending on process conditions
- Flame Resistance
- Self-extinguishing; LOI value in the 28–30 range.
Meta-Aramid (Nomex) Bag Filter Surface Treatment Options
| Surface Finish | Property | Recommended Application |
|---|---|---|
| Singeing | Smooths the surface and improves dust release. | General high-temperature applications |
| Calendering | Smooths the surface and is compatible with pulse-jet cleaning systems. | Asphalt and cement plants |
| Water and Oil Repellent | Helps reduce particle adhesion in flue gases containing moisture and oil. | Carbon black production and chemical processes |
| ePTFE Membrane | Provides surface filtration and low emission performance. | Applications requiring strict emission limits |
| Antistatic | Helps dissipate static charges in a controlled way. | Applications involving combustible dust |
Advantages of the Meta-Aramid (Nomex) Bag Filter
- High Flex Abrasion Resistance
- Withstands far more pulse-jet cleaning cycles than glass fibre.
- High Temperature Resistance
- Withstands 204 °C continuously and 240 °C peaks.
- Dimensional Stability
- Does not shrink or deform at high temperatures.
- Wide Range of Surface Treatments
- Five surface treatment options adaptable to different process conditions.
Industry Applications
Bag filters suited to different process needs are used across a wide range of industrial applications to protect product quality, protect equipment and support production continuity.
01
Vegetable Oil
Clarity, purity and shelf life in vegetable oil and refining.
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02
Pipe and Profile
Cooling water filtration in pipe and profile extrusion.
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03
Paint Industry
Surface quality and pigment filtration in the paint industry.
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04
Glass Industry
Furnace and process filtration in the glass industry.
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05
Dialysis Centers
Water preparation and process filtration in dialysis centers.
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06
Foundry Industry
Equipment protection and dust filtration in foundries.
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07
Industrial Oil
Filtration in industrial oil production and recovery.
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08
Energy and Biogas
Maximum efficiency and turbine protection in energy and biogas.
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09
Recycling
Filtration for efficiency and environmental compliance in recycling.
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10
Food and Beverage
Hygienic filtration in food and beverage.
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11
Pharmaceuticals and Biotechnology
GMP-compliant sterile filtration in pharmaceuticals and biotechnology.
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12
Paper and Packaging
Process water filtration in paper and packaging.
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13
Chemical Industry
Corrosion-resistant, safe filtration in the chemical industry.
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14
Cosmetics
Microbiological safety and precision filtration in cosmetics.
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15
Machinery
Precision and technical filtration in the machinery industry.
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16
Printing and Ink
Flawless color and print quality in printing and ink.
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17
Metal and Surface Treatment
Flawless surfaces and bath stability in metal and surface treatment.
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18
Forest Products
Resin and glue filtration in forest products and furniture.
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19
Automotive
Precision process filtration for zero defects in automotive manufacturing.
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20
Oil and Petrochemicals
Equipment protection and process safety in oil and petrochemicals.
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21
Plastic Packaging
Precision process filtration and raw material purity in plastic packaging.
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22
Plastic Injection Molding
Cooling and hydraulic filtration in plastic injection molding.
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23
Water and Environment
Recovery filtration in water and environmental technologies.
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24
Shipyards and Marine
Operational safety and efficiency in shipyards and marine.
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Alternative media for the same application
Nomex Bag Filter (Meta-Aramid)
Your Questions Answered
Frequently Asked Questions
At Prosestim, we are committed to answering your questions and providing technical support for our filtration solutions.
What is a meta-aramid (Nomex) bag filter?
What is the difference between Nomex and glass fibre?
Up to what temperature can it withstand?
In what pH range can it operate?
It operates safely in the pH 5–9 range.
Which cleaning systems is it compatible with?
It is compatible with pulse-jet, reverse-air and shaker systems.
Do you manufacture custom sizes?
Yes, custom production is available in non-standard diameter, length and surface treatment combinations.
Nomex Bag Filter (Meta-Aramid) RFQ Configurator
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