ChemResist Seals provides advanced sealing solutions for cryogenic applications, where extremely low temperatures, thermal cycling, pressure variations and demanding media require carefully engineered sealing materials and seal designs.
PCTFE (Polychlorotrifluoroethylene) is a high-performance fluoropolymer widely selected for critical cryogenic sealing applications because of its excellent low-temperature performance, low moisture absorption, chemical resistance and dimensional stability. These properties make PCTFE an ideal material for applications where conventional elastomeric seals may become too stiff or lose their sealing capability at cryogenic temperatures.
ChemResist PCTFE seals are engineered for applications involving cryogenic gases and liquids, including systems handling LNG, liquid nitrogen, liquid oxygen, liquid hydrogen and other low-temperature fluids, subject to application-specific material compatibility and design requirements.
Key material properties for demanding low-temperature sealing environments
Provides reliable sealing performance in extremely low-temperature operating environments.
Low moisture absorption helps maintain material stability in demanding cryogenic applications.
Excellent resistance to chemicals, corrosive media and demanding process environments.
Good dimensional stability supports consistent sealing performance during temperature changes.
Low permeability compared with many conventional sealing polymers makes PCTFE suitable for demanding gas applications.
Good resistance to gases and aggressive media used in critical cryogenic systems.
Excellent compression and creep characteristics compared with many fluoropolymer materials.
Suitable for static and selected dynamic sealing applications, depending on operating conditions.
Designed to maintain sealing integrity through extreme temperature changes
Cryogenic sealing requires more than simply selecting a low-temperature material. Thermal contraction, seal geometry, gland design, pressure, extrusion clearance and material properties must all be considered to maintain sealing integrity during cooling, operation and temperature cycling.
ChemResist Seals combines PCTFE compounds with application-specific seal profiles and spring-energized designs to provide reliable sealing solutions for demanding cryogenic equipment.
PCTFE sealing solutions can be considered for:
Continuous sealing force for demanding low-temperature applications
For applications requiring reliable sealing at very low temperatures, spring-energized PCTFE seals can provide continuous sealing force as the sealing material experiences thermal contraction.
The combination of a PCTFE sealing jacket and corrosion-resistant spring energizer is particularly useful where conventional elastomeric seals cannot provide the required cryogenic performance.
ChemResist Seals can engineer PCTFE spring-energized seals in different profiles and spring configurations according to pressure, temperature, media, hardware dimensions and sealing motion.
Custom PCTFE O-rings for extreme low-temperature applications
For static and dynamic applications at very low temperature, the traditional O-rings of rubber are not suitable. ChemResist offers custom-size PCTFE O-rings for such applications.
From standard PCTFE seals to application-specific cryogenic sealing solutions, ChemResist Seals focuses on material selection and seal design for reliable performance under extreme low-temperature conditions.
Sealing solutions for critical low-temperature environments
