Nomex filter bag is a kind of high performance dust removal filter bag, its main raw material is Nomex fibre, the fibre belongs to the aromatic polyamide class, with good high temperature resistance, flame retardant, non-melting and other characteristics. Nomex filter bags have a wide range of applications in the field of industrial dust removal, especially in the high temperature, corrosive environment of the dust removal equipment.
A Nomex filter bag is a high-performance dust collector filter bag made from meta-aramid (Nomex) fibers, known for excellent heat resistance, durability, and chemical stability.
Designed for industrial dust collection systems operating under extreme conditions, these bags offer long-term filtration efficiency at continuous temperatures up to 204°C (400°F) and peak resistance up to 240°C.
At Senotay (Hebei OuTai Environmental Protection Equipment Co., Ltd.), our Nomex dust collector bags are engineered for cement kilns, foundries, boilers, and chemical plants, ensuring stable performance and extended service life.
| Property | Specification |
|---|---|
| Material | 100% Nomex (Meta-Aramid Needle Felt) |
| Continuous Temp | 204°C |
| Peak Temp | 240°C |
| Fire Retardancy | Self-extinguishing (LOI 30) |
| Chemical Resistance | Excellent against acids, alkalis & hydrolysis |
| Surface Treatment | PTFE coating for improved dust release |
| Air Permeability | 40–60 L/m²/s @ 200 Pa |
Material: Nomex filter bag is made of Nomex fibre needle felt, which has good spinnability and abrasion resistance.
High temperature resistance: Nomex filter bag has excellent high temperature resistance, can work continuously at 180℃ and the instantaneous working temperature can reach 220℃. This makes it highly stable and reliable in high temperature environment.
Fire retardant performance: Nomex fibres start to decompose and carbonize only at 400℃, with a limiting oxygen index (LOI) of 30, which is neither spontaneous nor combustion-inducing, and has good fire retardant properties.
Chemical corrosion resistance: Nomex filter bag has good chemical corrosion resistance, acid and alkali resistance is not easy to corrode, suitable for a variety of corrosive environments.
Filtration performance: Nomex filter bag has smooth surface, the entanglement between the fibres is enhanced, which can cope with higher filtration wind speed, forming a high surface area coefficient, increasing the chance of dust capture. At the same time, its special cross-section pattern makes most of the dust is concentrated on the surface of the filter media, it is more difficult to penetrate into the filter media internal blockage of the gap, reducing the operating resistance and thus improve the filtration wind speed.
Application areas: Nomex filter bags are widely used in smelters, carbon black plant, ironworks blast furnace gas, calcium carbide plant kiln exhaust, foundry, steel plant flue gas, cement plant kiln exhaust, asphalt concrete mixing asphalt flue gas, coal-fired boilers, and other high-temperature environment of the dust removal purification.
In short, Nomex filter bag is a kind of dust filter bag with excellent performance, suitable for high temperature, corrosive environment of industrial dust removal equipment. Its good high temperature resistance, fire retardant properties and chemical corrosion resistance make it in the field of industrial dust removal has a high market share.
| Model Code | Air Flow (m³/h) | Dust Load g/m³ | Filter Efficiency (%) | Application Temp (°C) |
|---|---|---|---|---|
| NMX-101 | 1800 | ≤50 | 98.5 | 200 |
| NMX-202 | 2500 | ≤60 | 99.0 | 210 |
| NMX-303 | 3000 | ≤70 | 99.2 | 220 |
| NMX-404 | 3500 | ≤80 | 99.3 | 230 |
| NMX-505 | 4200 | ≤90 | 99.4 | 240 |
| NMX-606 | 5000 | ≤100 | 99.5 | 204 |
| NMX-707 | 6000 | ≤120 | 99.6 | 220 |
| NMX-808 | 7500 | ≤130 | 99.7 | 230 |
| NMX-909 | 9000 | ≤150 | 99.8 | 240 |
| NMX-1000 | 12000 | ≤180 | 99.9 | 240 |
At our ISO 9001:2015-certified factory in Hebei, China, Senotay produces precision-engineered Nomex filter bags for reliable, high-temperature filtration.
Core Manufacturing Advantages
Controlled fiber density & uniform pore distribution
Advanced heat-setting to prevent shrinkage or deformation
Optional PTFE membrane for higher filtration efficiency
Custom designs for pulse-jet, reverse-air, or shaker systems
Steel and Iron Works
Cement & Building Materials
Chemical & Petrochemical Plants
Carbon Black & Asphalt Plants
Coal Power Stations
Waste Incineration Plants
These industries rely on Nomex dust collectors in China for consistent filtration and emission compliance under extreme conditions.
product name: | Nomex filter bags | |
Fiber Type | Meta-aromatic polyamide | |
Weight (g/ Square meter ) | 500±10 | |
Thickness(mm) | 1.8-2 | |
Tensile strength (N/5×20cm) | vertical | >800 |
Weft | >1000 | |
Air permeability (L/m2/s·200pa) | 40-60 | |
Recommended operating temperature (℃) | <204 | |
Instantaneous operating temperature (℃) | 240 | |
Surface treatment process | PTFE coating | |
| Parameter | Standard Value | Test Method | Application Range | Notes |
|---|---|---|---|---|
| Fiber Content | 100% NOMEX® | Visual inspection | 70–100% NOMEX | May include composite materials |
| Weight | 500 ± 25 g/m² | ISO 9073-1 | 450–600 g/m² | Heavier for abrasive dust |
| Thickness | 1.8–2.2 mm | ISO 9073-2 | 1.5–2.5 mm | Measured @ 200 Pa |
| Meridional Tensile | > 2800 N/5×20 cm | ISO 9073-3 | 2500–3200 N | Room temperature |
| Latitudinal Tensile | > 2200 N/5×20 cm | ISO 9073-3 | 2000–2600 N | Room temperature |
| Air Permeability | 80–150 L/m²/s | ISO 9237 | 60–180 L/m²/s | At 200 Pa pressure |
| Continuous Temp | ≤ 220°C | ASTM D5587 | 180–220°C | Depends on composite |
| Peak Temp | 240°C | ASTM D5587 | 230–240°C | Short-term exposure |
| Filtration Efficiency | > 99.5% | EN 1822 | @ 1 μm particles | Varies with surface treatment |
| Hydrolysis Resistance | Excellent | Internal Test | Moderate to High | Superior to other aramids |
Hebei OuTai Environmental Protection Equipment Co., Ltd. (Senotay) is a leading Nomex filter bag manufacturer in China, specializing in industrial dust collection and air purification.
Our Strengths
15+ Years of filtration manufacturing experience
Full quality control under ISO 9001:2015
Customized engineering for various dust collector types
Global supply across Europe, Asia & the Middle East
Quick delivery through major logistics networks
Maintenance Tips:
Regular cleaning extends service life by up to 30%
Avoid moisture during shutdowns
Use pulse-jet cleaning for optimal dust removal
Service Life: 3–5 years depending on application and cleaning frequency.
