Fiberglass Filter Bag
Fiberglass filter bags exhibit excellent heat and corrosion resistance with low gas filtration resistance, and can be needled into felts by blending with various synthetic fibers. They operate continuously at 160-240°C (320-464°F) and withstand peak temperatures of 220-280°C (428-536°F), making them ideal for high-temperature industrial dust collection applications.
- Exceptional Heat Resistance
- Dimensional Stability
- Cost-Effective Solution
- Abrasion Resistance
- Chemical Resistance
- Easy Installation
Industry-Leading Fiberglass Filter Bag Manufacturer
As a global leader in high-temperature filtration solutions, DARKO manufactures premium Fiberglass Filter Bags engineered with high-silica glass fibers to deliver exceptional 280°C continuous heat resistance and 99.9% filtration efficiency. Our fiberglass bags are the optimal choice for extreme applications in cement kilns, glass furnaces, and metal smelting operations across 30+ countries, offering superior thermal stability (with <1% shrinkage at 280°C), 50% lower cost than PTFE alternatives, and reliable performance in dry, high-dust environments.
Reliable Material Transportation Solutions
Ultimate chemical resistance (handles all acids/alkalis) with 260°C continuous operation.
Cost-effective workhorse for temperatures below 130°C with 99.5% efficiency.
Excellent oxidation resistance at 190°C, ideal for coal-fired power plant FGD systems.
- Technical Specifications
- Key Advantages
- Top Applications
| Parameter | Metric | Imperial |
|---|---|---|
| Material | High-silica fiberglass (+PTFE coating optional) | – |
| Weight | 650-900 g/m² | 19-26 oz/yd² |
| Max Continuous Temp | 280°C | 536°F |
| Peak Temp | 300°C (30 mins) | 572°F |
| Filtration Efficiency | 99.9% @ 1.0µm | – |
| Air Permeability | 10-15 m³/m²/min (@125Pa) | 35-50 CFM/ft² (@0.5″ H₂O) |
| Chemical Resistance | Good for dry gases; avoid HF & hot phosphoric acid | – |
| Unmatched Heat Resistance | Continuous 280°C / Peak 300°C – ideal for clinker coolers, kiln inlets |
| Low Thermal Shrinkage | <1% shrinkage at 280°C – maintains bag shape in pulse-jet systems |
| Cost-Effective | 50% lower cost than PTFE/P84 bags for dry, high-temp applications |
| Abrasion Resistant | Silane-coated fibers withstand cement/ash abrasion (100,000+ pulses) |
| Easy to Install | Rigid structure prevents bag collapse (no support cages needed) |
✔ Cement Plants – Preheater/Kiln exhaust (up to 280°C)
✔ Steel Mills – EAF (Electric Arc Furnace) fume extraction
✔ Glass Manufacturing – Furnace flue gas filtration
✔ Power Plants – Coal/biomass boiler fly ash collection
(Not recommended for wet gases or acidic condensate conditions)
Related Products
Why Choose Fiberglass Filter Bags? The Ultimate High-Temp Workhorse
🔥 Extreme Heat Resistance for Harsh Industrial Environments
DARKO’s fiberglass filter bags are engineered for continuous operation at 280°C (536°F), making them the top choice for cement kilns, metal smelting, and glass furnaces. Made from 100% high-silica fiberglass, these bags deliver 99.9% filtration efficiency while resisting thermal shock, oxidation, and abrasive dust.
1. Unmatched Temperature Resistance
Withstand continuous 280°C/536°F and peak 300°C/572°F – the highest operating temperature among all filter media, perfect for cement kilns and metal smelting.
2. Cost-Effective Performance
Deliver PTFE-grade heat resistance at 50% lower cost – the most economical solution for dry, ultra-high-temperature applications.
3. Superior Dimensional Stability
<1% thermal shrinkage at 280°C maintains perfect bag shape, eliminating leaks common in other high-temp bags.
4. Optimized for Harsh Environments
• Silane-coated fibers resist abrasive dust (100,000+ pulse cycles)
• Graphite-enhanced versions prevent moisture-related degradation
5. Easy to Install & Maintain
Rigid structure requires no support cages in most systems, reducing installation time by 30% vs. floppy filter media.
6. Proven Industrial Reliability
Over 10,000 installations in:
✓ Cement plant preheaters (280°C gases)
✓ Glass furnace exhausts
✓ Steel mill EAF fume control
Typically 12-18 months in cement kilns; 18-24 months in lower-abrasion applications like glass furnaces.
Yes! Our silane-treated bags withstand 0.5-0.7 MPa pulses. Avoid mechanical shaking.
Only with anti-static coatings (ATEX option available). Standard fiberglass is non-conductive.
For dry kiln gases >260°C, fiberglass offers equal performance at half the cost.