Nomex Filter Bags: High Temperature Aramid Media Guide & Specs

High-Performance Nomex Filter Bags: The Industry Standard for High-Temperature Filtration

In industrial dust collection, Nomex filter bags (also known as Aramid filter bags) are the premier choice for applications where thermal stability and mechanical durability are non-negotiable. Engineered to operate in continuous temperatures up to 204°C (400°F), Nomex media provides a perfect balance of performance and longevity.

What is a Nomex Filter Bag?

Nomex is a high-temperature resistant aromatic polyamide (Aramid) fiber. Unlike standard polyester bags, Nomex does not melt or support combustion. It provides excellent resistance to abrasion and can withstand the mechanical stress of high-frequency pulse-jet cleaning systems.

Key Technical Specifications

Our Nomex filter bags are manufactured using high-quality needle-punched felt to ensure maximum air permeability and filtration efficiency.

Property	Specification
Material	100% Aramid (Nomex) Needle Felt
Weight	450g/m², 500g/m², 550g/m² (Customizable)
Operating Temp (Continuous)	≤ 204°C (400°F)
Max Temp (Instant Surge)	240°C (460°F)
Acid Resistance	Fair
Alkali Resistance	Good
Abrasion Resistance	Excellent
Air Permeability	10 – 15 m³/m²·min @127Pa

Common Surface Treatments

To further enhance performance, we offer specialized finishes for our Nomex media:

• Singed & Calendered: Provides a smooth surface for better dust cake release.
• Water & Oil Repellent (PTFE Coating): Prevents moisture absorption and blinding in humid conditions.
• ePTFE Membrane: Achieves ultra-low emissions (<5mg/Nm³) and reduces pressure drop.

Primary Application Fields

Nomex filter bags are widely utilized in industries where flue gas temperatures exceed the limits of ordinary fibers:

• Asphalt Mixing Plants: The industry standard for aggregate drying and baghouse systems.
• Cement Industry: Used in kiln head and clinker cooler dust collection.
• Metal Smelting: Ideal for lead, copper, and aluminum smelting furnaces.
• Chemical Processing: High-heat drying and calcining applications.

Why Source Nomex Filter Bags from ECOGRACE?

As a specialized manufacturer, we ensure that every Nomex bag meets rigorous ISO 9001 standards. Our bags are precision-sewn with high-temperature Aramid thread to prevent seam failure, ensuring 100% filtration integrity throughout the bag’s service life.