PTFE (Polytetrafluoroethylene) is a synthetic fluoropolymer composed of carbon and fluorine atoms. Known for its exceptional chemical inertness, thermal stability, and non-stick surface.. PTFE is the same base material used in Teflon™ coatings. Its unique molecular structure prevents the adhesion of dust particles which ensuring superior cleaning and longer filter life.
The PTFE Filter Bag (Polytetrafluoroethylene) is the most chemically resilient and non-stick industrial filtration media available in the Senotay lineup. Woven entirely from PTFE fibers (the same base material used in Teflon™), it offers complete chemical immunity across the entire pH 0 to 14 spectrum—a much wider window than Nomex (pH 4–10) or FMS (pH 1–12). Operating continuously at 260°C (500°F) with transient surges up to 280°C, its inherently non-stick, non-hygroscopic surface easily sheds sticky, moist dust cakes, making it the ultimate solution for waste incineration, petrochemical refining, and heavy chemical manufacturing.
PTFE-300 | Cement & Lime Production
Airflow Permeability: 2.5 L/m²/s | Surface Treatment: PTFE Membrane
Designed with a laminated surface membrane to capture ultra-fine particulate in cement kilns without blinding the substrate.
PTFE-800 | Pharmaceutical & Food Grade
Airflow Permeability: 3.6 L/m²/s | Surface Treatment: Film Lamination
Provides the absolute highest filtration efficiency and cleanliness required for pharmaceutical fluid drying and food ingredient processing.
Media Properties: 750 g/m² 100% Polytetrafluoroethylene with a thickness of 0.9–1.1 mm. Inherently flame-retardant (will not sustain combustion) and begins thermal decomposition only at 327°C.
Filtration & Airflow: Achieves 99.7% to 99.99% filtration efficiency. Due to the density of the fiber, air permeability is lower than standard felts, sitting at 1.8–3.6 L/m²/s (@200Pa).
Longevity: When maintained properly with dry compressed air pulsing and stabilized temperatures, PTFE bags boast an exceptional service life of 4 to 6 years, significantly outlasting PPS or glass fiber in aggressive conditions.
Complete Chemical Immunity (pH 0–14): Provides 100% chemical inertness against hydrofluoric acid, sulfuric acid, strong alkalis, and organic solvents—surviving harsh flue gases that destroy Nomex (pH 4–10 limit) or FMS (pH 1–12 limit).
Continuous High-Heat Capability: Operates continuously at 260°C with short-term surge resistance up to 280°C (thermal decomposition point at 327°C) without fabric shrinkage or distortion.
Non-Stick & Moisture-Proof Surface: Hydrophobic and non-hygroscopic properties prevent blinding from wet or sticky dust, ensuring easy cake release and low, stable differential pressure.
Ultra-High Efficiency (99.99%): Traps sub-micron particles and hazardous emissions in critical waste incineration, chemical manufacturing, and pharmaceutical applications.
Extended 4 to 6 Year Lifespan: Outlasts PPS (Ryton) and glass fiber bags by 2 to 3 times in harsh corrosive environments, drastically reducing replacement and maintenance costs.
Factory-Direct Pricing. Certified Quality. Dedicated Support.
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Certified & Compliant
ISO 9001 and CE certified.
Fast, Reliable Delivery
Lifetime Technical Support: Expert engineering consultations on air-to-cloth ratios, differential pressure control, and gas chemistry analysis.
Full System/Parts Availability: Direct access to matching high-temperature components, including stainless steel (304/316) filter cages and venturis.
Remote Troubleshooting: Fast diagnostic assistance for field issues like premature blinding, dust leakage, or fluctuating pressure drops.
Trusted by industrial environmental equipment and air filtration plants worldwide. Ready for yours.
Fiber Composition: 100% Polytetrafluoroethylene (PTFE) fiber.
Weight: approximately 750 g/m².
Thickness: 0.9–1.1 mm.
Air Permeability: 1.8–3.6 L/m²/s at 200 Pa.
Operating Temperature: less than<260°C (Instantaneous: 280°C).
Treatment: Dipping Coating for improved filtration and anti-stick properties.
Performance: Excellent chemical inertness and thermal endurance.
Type No. | Air Permeability (L/m²/s) | Working Temp (°C) | Surface Treatment | Typical Application |
PTFE-100 | 1.8 | 250 | Dipping Coated | Steel Dust Collection |
PTFE-200 | 2.2 | 260 | Glazed Finish | Power Industry |
PTFE-300 | 2.5 | 240 | PTFE Membrane | Cement Production |
PTFE-400 | 3.0 | 250 | Anti-Static | Chemical Industry |
PTFE-500 | 3.0 | 280 | PTFE Coated | Petrochemical Plants |
PTFE-600 | 2.8 | 270 | Hydrophobic | Food & Beverage |
PTFE-700 | 3.4 | 260 | Dual-Layer | Waste Incineration |
PTFE-800 | 3.6 | 240 | PTFE Film Lamination | Pharmaceutical |
PTFE-900 | 2.4 | 250 | Singed | Pulp & Paper |
PTFE-1000 | 3.2 | 260 | Antioxidant Treated | Metallurgical Plants |
product name: | PTFE filter bags | |
Fiber Type | Polytetrafluoroethylene | |
Weight (g/ Square meter ) | 750 | |
Thickness(mm) | 0.9-1.1 | |
Tensile strength (N/5×20cm) | vertical | 800 |
Weft | 800 | |
Air permeability (L/m2/s·200pa) | 1.8-3.6 | |
Recommended operating temperature (℃) | ＜260 | |
Instantaneous operating temperature (℃) | 280 | |
Surface treatment process | Dipping coating | |
Model Code | Air Volume (m³/h) | Dust Load (g/m³) | Filtration Efficiency (%) | Pressure Drop (Pa) |
PF-101 | 2000 | ≤30 | 99.7 | 130 |
PF-202 | 3000 | ≤40 | 99.8 | 140 |
PF-303 | 4000 | ≤60 | 99.85 | 150 |
PF-404 | 5000 | ≤70 | 99.87 | 160 |
PF-505 | 6000 | ≤80 | 99.9 | 165 |
PF-606 | 7500 | ≤90 | 99.9 | 170 |
PF-707 | 9000 | ≤100 | 99.95 | 175 |
PF-808 | 11000 | ≤120 | 99.97 | 180 |
PF-909 | 13000 | ≤140 | 99.98 | 185 |
PF-1010 | 15000 | ≤150 | 99.99 | 190 |
At Hebei OuTai Environmental Protection Equipment Co., Ltd. (Senotay) our every PTFE filter bag is produced under strict quality standards using advanced manufacturing processes and testing systems.
In the pharmaceutical industry, PTFE filter bags are used to filter a variety of pharmaceutical fluids and gases, ensuring product purity and safety. In the metallurgical industry, they are able to withstand the filtration needs of high temperatures and corrosive substances, providing reliable filtration for metallurgical production.
In the food and tobacco industry, the corrosion resistance and cleanliness of PTFE filter bags enable them to filter a variety of food ingredients and tobacco products, ensuring product quality and taste. In the paper industry, PTFE filter bags can effectively remove impurities in the pulp, improving the quality and appearance of paper.
In the petrochemical and power industries, the high temperature and corrosion resistance of PTFE filter bags makes them ideal for filtering a wide range of oils and chemicals.
In the cement production field, PTFE filter bags are able to filter dust and particles in the cement production process, protecting the environment and equipment.
In addition, PTFE filter bags play an important role in other chemical applications, such as filtering various organic solvents, acid and alkali solutions. Its unique performance and wide range of applications make PTFE filter bags an indispensable part of modern industrial production.
ISO 9001:2015 Certified Facility for global export quality assurance.
Our Precision Needle-Punching & Laminating Lines ensuring uniformity and pore control.
Advanced PTFE Dipping Technology delivering superior surface finish for easy cleaning.
High-Temperature Heat Setting prevents shrinkage and distortion during operation.
Customized Production: Tailored to fit pulse-jet, reverse-air and mechanical shaker dust collectors
These innovations keep Senotay among the top PTFE filter bag manufacturers in China and beyond.
Inert to acids and alkalis and including hydrofluoric and sulfuric acid.
Non-reactive to organic solvents and hydrocarbons.
Thermal decomposition point: around 327°C.
Non-hygroscopic, unaffected by moisture or high humidity.
Flame-retardant – PTFE does not sustain combustion.
Petrochemical and Refinery Industry.
Cement Kilns and Lime Plants.
Pyrolysis and Metal Smelting.
Waste Incineration and Power Plants.
Food and Beverage and Tobacco Industry.
Pulp and Paper Manufacturing.
Pharmaceutical and Fine Chemical Sectors.
These industries rely on Senotay’s PTFE dust collector bags to ensure environmental compliance, efficiency and maintenance reduction.
To maximize performance and lifespan, PTFE filter bags should be maintained under proper cleaning systems (pulse-jet or reverse airflow).
Tips for Optimal Lifespan:
Avoid rapid temperature fluctuations.
Regularly monitor pressure drop.
Clean with dry compressed air..
Keep moisture and condensation under control.
Expected Service Life: 4–6 years depending on operational conditions.
PTFE vs. Alternative Filtration Media: The Clear Choice for Extreme Conditions
In harsh industrial environments, PTFE filter media outperform alternatives like PPS (Ryton) and glass fiber. While PPS degrades above 190°C and struggles with chemical exposure, PTFE maintains full integrity up to 260°C with unmatched chemical resistance. Unlike brittle glass fiber, PTFE offers superior flexibility and durability.
Extensive testing by our engineers shows PTFE filter bags last 2–3 times longer than PPS or glass fiber in aggressive chemical conditions—making PTFE the most reliable and cost-effective solution for extreme applications.
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