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Our Sales Team can assist you in high-performance material selection that is a appropriate for your custom heat sealing application.

Heat Sealing Thin Fluoropolymer (Teflon®) Films

We are experts with over 25 years of experience in heat sealing Fluoropolymer (Teflon®) films, and a variety of other thin high-performance films into a wide array of lay-flat andthree-dimensional configurations.

Advantages of Fluoropolymer (Teflon®) Heat Sealed Products

Fluoropolymer (Teflon®) heat-sealed products have numerous unique advantages when compared to traditional low temperature plastics:

  • Chemical Inertness
  • Chemical Resistance
  • High Temperature Resistance
  • Cryogenic Temperature Resistance
  • Low Permeability
  • High Weatherbility
  • Excellent Optical Clarity
  • Releaseability
  • High Dielectric Strength
  • Low Flammability

Examples of Heat Sealed Fluoropolymer (Teflon®) Products

Examples of heat-sealed products that can be produced from Fluoropolymer (Teflon®) film are:

  • Bags for inert sampling
  • Cryogenically resistant bags
  • Large panels or continuous belts
  • Highly temperature resistant bags
  • Cell culture bags
  • Reservoir bags to hold caustic fluids
  • Liners for a variety of containers like pails, drums or tanks
  • Fluid transfer bags with Fluoropolymer fittings heat-sealed into them
  • Three dimensional Simulation Chambers used for aerosol experiments


Our heat sealing manufacturing processes allow for a wide array of applications, and if required can be tailored to a specific need. All heat sealing processes are highly traceable, and Certificates of Compliance are available upon request. Welch Fluorocarbon is an ISO 9001:2008 certified company.


Fluoropolymers (Teflon®) are our specialty, but we are able to successfully heat seal a variety of high-performance thermoplastic films.

  • Teflon® FEP
  • Teflon® PFA
  • MFA
  • PVDF
  • ETFE
  • PVF


Teflon® is a registered trademark of DuPont used under license by Welch Fluorocarbon, Inc.

From Our Tech Blog

Custom Teflon® Simulation Chambers

Vacuum Forming PEEK Film

Thermoforming (vacuum forming) FEP Film

View our Tech blog »