High-Temperature Meta-Aramid Filter Bags – Nomex Filter Bags Equivalent
Our high-temperature meta-aramid filter bags are engineered for industrial dust collection under extreme heat conditions. These bags offer excellent thermal stability, abrasion resistance, and long service life. They are equivalent in performance to Nomex® filter bags.
As an experienced filter bag manufacturer, we provide custom solutions for various industries, including asphalt plants, cement kilns, steel mills, and foundries.
Properties of Nomex Filter Bags
- Heat Resistance：Nomex filter bags can withstand continuous operating temperatures up to 204°C and short-term peaks up to 240°C
- Chemical Resistance：They offer good resistance to acids and alkalis, making them suitable for use in environments with harsh chemicals.
- Mechanical Strength：Nomex fibers provide excellent mechanical strength, ensuring durability and a longer service life.
- Abrasion Resistance：The inherent abrasion resistance of Nomex fibers helps the bags withstand the rigors of dust collection processes.
Nomex Filter Bags Technical Specifications
| Property | Nomex® / Meta-Aramid Filter Bags |
|---|---|
| Filter Media | Meta-Aramid Needle Felt |
| Aokai Media Grade | PRO845 |
| Continuous Operating Temperature | ≤ 204°C |
| Peak Temperature | ≤ 250°C |
| Weight | 450 ± 5% g/m² |
| Thickness | 2.2 ± 10% mm |
| Air Permeability | 22 ± 20% m³/m²/min @ 200 Pa |
| Tensile Strength – Warp | > 900 N/5 cm |
| Tensile Strength – Weft | ≥ 1,200 N/5 cm |
| Elongation – Warp | ≤ 25% |
| Elongation – Weft | ≤ 50% |
| 24-Hour Heat Shrinkage – Warp | ≤ 1.5% |
| 24-Hour Heat Shrinkage – Weft | ≤ 1.0% |
| Abrasion Resistance | Good |
| Acid Resistance | Moderate |
| Alkali Resistance | Moderate |
| Hydrolysis Resistance | Limited; not recommended for high-moisture conditions |
| Recommended Gas Condition | Dry, high-temperature, abrasive dust |
| Available Finishes | Heat setting, singeing, glazing, low-adhesion treatment, PTFE membrane, water & oil repellent, anti-static treatment |
| Available Bag Designs | Snap band, ring top, cuff top, flange top, disc bottom, reinforced bottom, flat bags and custom configurations |
* Parameters are subject to minor material and weaving tolerance variations. This specification refers to our meta-aramid filter bag with product code PRO845. Aokai supports custom development for non-standard configurations.
Tailored Finishing Treatments
01
Singeing / Calendering
Removes loose surface fibers and runs the material through hot calendering rolls for a smooth surface that ensures exceptional dust-cake release.
02
Water & Oil Repellent
Impregnated with Teflon agents to repel moisture and light hydrocarbons, preventing bag-blinding due to local dew-point cooling.
03
PTFE Membrane Coating
Laminates a micro-porous expanded PTFE membrane on the bag surface, enabling surface filtration and capturing particulates down to 0.1μm.
04
PTFE Impregnation
Coats each fiber evenly with a Teflon bath to significantly increase anti-oxidant thresholds and provide friction-free sliding wear properties.
Application
high heat and sticky dust that can clog filters
high-temperature metal dust and sparks
acidic flue gas and variable dust load
abrasive dust causing rapid wear
Related High-Temperature Filter Bags
Explore our extensive portfolio of high-temperature filter media designed to conquer diverse chemical, physical, and temperature-related challenges.
PPS Filter Bags
Excellent anti-hydrolysis and supreme acid/alkali resistance. Highly recommended for coal-fired boilers and municipal waste incinerators.
PTFE (Teflon) Bags
Maximum threshold for complex gaseous attacks. Ultimate corrosion barrier for critical, high-acid chemical and fly ash baghouse operations.
P84 filter bag
The unique tri-lobed fiber cross section increases the surface area to intercept ultra-fine particulates. High efficiency for cement mills.
Fiberglass Filter Bag
Combines the cost-efficiency of fiberglass with the flex endurance of aramid. Perfectly suited for static metallurgical filtration.