PCTFE: The Fluoropolymer of Excellence for Sealing and Cryogenic Stability

Polychlorotrifluoroethylene (PCTFE), also known as Kel-F®, belongs to the family of technical fluoropolymers. Thanks to its unique molecular structure based on fluorine and chlorine, this material combines chemical inertness, thermal stability and exceptional impermeability, making it indispensable in the most demanding industrial environments.

Used in aeronautics, cryogenics, petrochemicals and advanced medical devices, PCTFE is often the only polymer capable of meeting critical requirements in terms of reliability and purity.
 

Extremely gas- and moisture-tight

• Low gas permeability (best WVTR on the market)
• Ideal for ultra-pure gas storage systems or controlled atmosphere packaging
• Used for cryogenic seals operating at -200°C

Enhanced chemical inertia

• Resistant to oxidizing agents, concentrated acids and organic solvents
• Stable behavior in the presence of corrosive fluids or severe thermal variations

Thermomechanical performance adapted to extreme cycles

• Service temperature: -200°C to +150°C
• Melting point: 210°C, suitable for extrusion and thermoforming
• Low thermal expansion, guaranteeing excellent dimensional stability

Aerospace & Cryogenics

• Seals for on-board cryogenic systems
• Components exposed to intense thermal cycles
• Liquid fuel tanks for aeronautics

Chemicals & corrosive processes

• Coatings and liners for acid-resistant equipment
• Corrosion protection for heat exchangers and distillation columns

Electronics and medical industries

• Encapsulation of sensitive circuits thanks to its dielectric properties
• Biocompatible and sterilization-resistant: ideal for implantable medical devices

Voltalef® 302 - Maximum chemical performance

• Specially designed for chemically aggressive environments
• Service temperature: -196°C to +150°C
• Fireproof and highly stable under prolonged conditions

Voltalef® 402 - Aerospace & cryogenics standard

• Dedicated to critical applications in thespace and nuclear industries
• Available in custom extruded profiles, high-precision tubes, complex joints...

DEMGY's expertise enables us to fully control the PCTFE extrusion process, with a high level of traceability, material quality and customization. Thanks to this approach, manufacturers benefit from

• reduced risk of application failure
• precise component sizing
• customized technical support
   

PCTFE is an indispensable ally for all applications where chemical integrity, thermal stability and dimensional accuracy are critical. Thanks to Voltalef® grades and DEMGY expertise, you have access to reliable, durable and proven polymer solutions.