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Welded Seam Filter Bags

PTFE Welded Filter Bags

PTFE welded filter bags are premium filtration solutions designed for highly aggressive chemicals, solvents, and high-temperature processes. Constructed from pure PTFE media with welded seams, they deliver exceptional chemical resistance, non-stick properties, and long service life. PTFE bags are compliant with FDA standards, making them suitable for pharmaceutical and food-grade applications.

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Operation

Liquid enters from the inside of the bag and flows outward. Particles are trapped within or on the surface of the PTFE media. Welded seams ensure zero bypass and prevent contamination. PTFE media resists fouling and allows for efficient filtration even in harsh conditions.

  • 100% PTFE construction – chemically inert

  • Welded seam construction – leak-proof and fiber-free

  • High-temperature resistance (up to 250°C)

  • Excellent non-stick and low surface energy properties

  • FDA compliant for food and pharma use

  • Long service life even in harsh environments

Standard Sizes:

  • Size #1: Ø7” x 16” length

  • Size #2: Ø7” x 32” length

  • Size #3: Ø4” x 8” length

  • Size #4: Ø4” x 14” length

Custom Options:

  • Micron ratings: 1–200 µm

  • Multi-layer PTFE composite design

  • Collar options: PTFE flange, stainless steel ring

  • Material: 100% PTFE

  • Micron Rating: 1–200 µm

  • Operating Temperature: Up to 250°C

  • pH Range: 0–14 (universal chemical resistance)

  • Max. Differential Pressure: 2.5 bar (36 psi)

  • Construction: Welded seams, depth/surface filtration

  • Aggressive chemical and solvent filtration

  • Food & beverage critical filtration (FDA approved)

  • Pharmaceutical processing and sterile liquids

  • High-temperature process streams

  • Petrochemical and oil refining applications

  • Electronics-grade chemical filtration

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