Liquid PTFE Filter Bags

Liquid PTFE Filter Bags

Liquid PTFE Filter Bags Oveview

Industrial-grade liquid filter bags made from 100% PTFE (Polytetrafluoroethylene), engineered for the most corrosive, high-temperature liquid-filtration environments. Strong acids, strong alkalis, organic solvents, high-temperature liquids, process fluids, corrosive wastewater, oils, emulsions, and high-purity chemical systems.

Key selection criteria include:

  • Temperature tolerance: Continuous up to 240–260 °C
  • Chemical compatibility: Universal resistance to acids, alkalis, solvents, oils
  • Micron rating: 1–200 µm
  • Flow/pressure conditions: Stable under high viscosity & fluctuating pressure
  • Material choice: PTFE felt or PTFE membrane
  • Sealing ring options: Stainless steel, galvanized steel, molded plastic, or PTFE
  • Expected service life: Long-term durability in aggressive liquid systems

Compatible industries: Chemical processing, petrochemical, pharmaceuticals, coatings, food & beverage (acidic/alkaline conditions), high-purity water, semiconductor, wastewater treatment, oil processing, resin & polymer systems.

Liquid PTFE Filter Bags
Liquid PTFE Filter Bags

Liquid PTFE Filter Bags Key Performance Benefits

01
High-Temperature Stability

PTFE felt provides exceptional thermal stability, delivering reliable filtration in liquid systems operating at 240–260 °C continuous without melting, degrading, or shrinking. It maintains structural integrity even in aggressive high-temperature chemical processes, solvent recovery systems, and corrosive hot liquids.

02
Universal Chemical Resistance

Made from 100% PTFE, the media offers universal compatibility with strong acids, strong alkalis, organic solvents, oils, and corrosive process fluids. This makes PTFE one of the few materials capable of delivering long-term filtration performance in the most chemically demanding liquid-filtration systems.

03
Ultra-Pure Filtration Performance

PTFE liquid filter bags have extremely low extractables and zero fiber shedding, making them suitable for semiconductor chemicals, pharmaceuticals, high-purity water, and resin or polymer processing. They ensure clean, stable, and contamination-free filtration in critical-purity environments.

04
Stable Flow in Harsh Conditions

With a micron rating range of 1–200 µm, PTFE bags maintain stable permeability and low pressure drop even in high-viscosity or chemically aggressive liquids. The media resists deformation and maintains filtration efficiency under fluctuating flow and pressure conditions.

05
Longest Service Life in Extreme Environments

Compared with polyester, polypropylene, nylon, and other filter media, PTFE delivers the longest operational lifespan due to its unmatched chemical resistance, no hydrolysis, and excellent thermal stability. This results in fewer change-outs, reduced downtime, and significantly lower operating costs for harsh liquid-filtration systems.

06
Suitable for the Most Demanding Industries

PTFE media is ideal for liquid-filtration applications in chemical processing, petrochemical systems, pharmaceuticals, coatings, semiconductor liquids, high-purity water, wastewater treatment, and acidic or alkaline process fluids. It provides consistent performance where other filter materials fail.

PTFE Liquid Filter Bag Technical Specifications

Fiber Composition PTFE Needle felt
Continuous Operating Temperature 240°C
Instantaneous Operating Temperature 260°C
Radial Tensile Strength ≥800 N
Weft Tensile Strength ≥1000 N
Filtration Precision 10, 25, 50, 100, 150, 200, 400, 500, 600, 800 µm
Filtration Air Velocity ≤1.0 m/min
Acid-Base Resistance Excellent
Oxidation Resistance Excellent
Weight 750–800 g/m²
Thickness 1.2–1.6 mm

INDUSTRIAL
APPLICATIONS

Made from 100% PTFE, these filter bags deliver unmatched durability in strong acids, strong alkalis, high-purity chemicals, solvents, oils, aggressive wastewater, and process liquids, ensuring reliable performance in the most demanding industrial systems.

More Applications
Chemical Processing & High-Purity Chemical Systems

Chemical Processing & High-Purity Chemical Systems

Ideal for strong acids, strong alkalis, oxidizers, corrosive intermediates, and high-purity chemical production.

Semiconductor, Electronics & UPW Systems

Semiconductor, Electronics & UPW Systems

Designed for ultra-low extractables and zero fiber shedding, PTFE filter bags are ideal for ultra-pure water treatment, wet-etching chemicals, CMP slurries, plating baths, and micro-electronics process fluids.

Solvents, Oils, Resins & High-Temperature Process Liquids

Solvents, Oils, Resins & High-Temperature Process Liquids

PTFE liquid filter bags offer excellent resistance to organic solvents (ketones, esters, aromatics), oils, emulsions, resins, and aggressive hydrocarbon mixtures.

Engineering Support & Customization

Engineering card image

Pre-Project Technical Evaluation

  • Liquid temperature profile & high-temperature cycle behavior (up to 240–260 °C)
  • Chemical exposure analysis: strong acids, strong alkalis, oxidizers, solvents, organics
  • Contaminant characteristics: particle size, density, viscosity, solubility
  • Required micron rating, dirt-holding capacity & system flow rate
  • Compatibility with housings, baskets, sealing rings (PTFE / steel / stainless / plastic)
  • Evaluation of extractables for high-purity & semiconductor systems
  • Target service life planning in corrosive or ultra-pure environments
Engineering card image

Custom Engineering Solutions

  • Custom selection of PTFE felt weight, thickness & permeability
  • Option for full PTFE membrane-laminated media for absolute filtration
  • Reinforced media construction for high-pressure or corrosive-fluid systems
  • Surface-finish customization: singeing, calendaring, heat-setting for improved stability
  • Chemical/media matching for: acids, alkalis, solvents, oils, resins, ultrapure chemicals
  • Multiple ring options: solid PTFE, stainless steel, steel, galvanized, molded plastic
  • Seam engineering: PTFE-thread sewing or welded seams, top/bottom configurations
  • Engineering consultation to ensure perfect fit, long-term reliability & zero contamination
Engineering card image

Quality Assurance & Testing

  • Air-permeability & pressure-drop performance testing
  • Tensile-strength & elongation testing for PTFE felt and membrane media
  • Dimensional stability & heat-shrinkage analysis up to 260 °C
  • Chemical-resistance testing for strong acids, strong alkalis & high-purity chemicals
  • Extractables and ion-release checks for semiconductor & ultrapure systems
  • Fiber-distribution & surface-finish inspection
  • Verification of sealing-ring integrity: PTFE / stainless / plastic / steel
  • Abrasion-resistance evaluation for high-flow or high-viscosity liquids
  • Quality checks for welded seams, PTFE-thread stitching & filter-media bonding
LET’S WORK TOGETHER

Why Choose Omela Filtration?

Choosing the right filtration supplier affects everything from system stability to maintenance downtime. At Omela Filtration, we combine reliable materials, controlled production, and years of industry experience to support dust and liquid filtration needs across different plants and applications.

We use consistent-grade filter media, sewing thread and metals sourced from qualified suppliers. Each batch is checked for weight, thickness, air permeability and tensile strength to keep performance steady across shipments.

Our facility is equipped with modern sewing lines, hot-welding machines and automated inspection tools. This keeps production efficient and helps us meet tight delivery schedules, even on custom orders.

Our engineers and technicians have long experience with dust collectors, liquid systems and industry-specific conditions. They help you match materials to temperature, chemistry and air-to-cloth ratios to avoid unnecessary failures.

From sampling to documentation and shipping, our team responds quickly and keeps information clear. Customers in cement, asphalt, power and water-treatment plants rely on our service to resolve problems without delay.

From the first technical discussion to installation and long-term maintenance, our team stays involved at every stage. We analyze your operating conditions, adjust product designs when needed, and ensure the final filtration setup works reliably in real plant environments. After delivery, our service team continues to provide guidance and troubleshooting support, helping you keep your system stable and downtime low.

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Frequest Asked Questions

1. When should I choose Liquid PTFE Filter Bags instead of polypropylene or polyester bags?
2. What industries commonly use Liquid PTFE Filter Bags?
3. What micron ratings are available for PTFE liquid filter bags?
4. Can Omela customize PTFE filter bags for specific chemical or process requirements?
5. How does Omela evaluate whether PTFE is the correct media for my system?
6. Which sealing ring is best for PTFE liquid filtration applications?
5/5 - (3 votes)

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With 20+ years of engineering expertise and 1000+ global clients across water treatment, chemicals, coatings, food & beverage, and industrial process filtration, Omela delivers reliable liquid-filtration performance, extended bag life, and stable system operation under demanding conditions.

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