Ketron™ CR-D PEEK is a filled polyetheretherketone material carefully engineered to exhibit unique properties needed for dynamic sealing applications in extreme cold, including cryogenic environments. The material's extreme durability ensures it can withstand exposure to temperatures as cold as -196°C (-320°F) without compromising its strength, ductility, toughness, and resilience. The material has an extremely low coefficient of friction, making it an excellent option for ball valves, dynamic seals, and gaskets at cryogenic temperatures.
PROPERTIES
For dynamic applications in cryogenic environments
Withstands temperatures as low as -196°C (-320°F)
Low thermal expansion and high thermal conductivity for consistent operation
Extremely low coefficient of friction, ideal for ball valves, dynamic seals and gaskets at cryogenic temperatures
Lower leakage rates in valve seat applications
Thermal Properties
Property
Value
Heat Deflection Temperature at 1.8MPa (264 psi) (ºC)
173
Continuous allowable service temperature in air
Flammability (UL Rating)
V-0
Mechanical Properties
Property
Value
Tensile Strength (MPa)
76
Tensile Modulus of Elasticity (MPa)
3,100
Compressive stress at 1% nominal strain (MPa)
32
Compressive stress at 2% nominal strain (MPa)
60
Compressive stress at 5% nominal strain (MPa)
104
Flexural Strength (MPa)
122
Charpy Impact Notched (kJ/m²)
4
Chemical Properties
Property
Value
Hot Water / Steam
Acceptable
Acids, Weak
Acceptable
Acids, Strong (pH 1-3)
Limited
Alkalies, Weak
Acceptable
Alkalies, Strong (pH 11-14)
Acceptable
Hydrocarbons - Aromatic
Acceptable
Hydrocarbons - Aliphatic
Acceptable
Ketones, Esters
Acceptable
Chlorinated Solvents
Acceptable
Alcohols
Acceptable
Inorganic Salt Solutions
Acceptable
Electrical Properties
Property
Value
Dielectric Strength (kV/mm)
Industry Specific Usage (FOOD)
Property
Value
FDA
Not compliant
EU
Not compliant
USDA
Not compliant
3A-SSI
Not compliant
VMX materials
Not compliant
Industry Specific Usage (MEDICAL)
Property
Value
ISO 10993-5 and USP <87>
Not compliant
ISO 10993-10 Sensitization
Not compliant
ISO 10993-10 (Intracutaneous Reactivity) and USP <88>
Not compliant
ISO 10993-11 and USP <88>
Not compliant
USP <88> (Implant)
Not compliant
ISO-10993-4
Not compliant
USP <661>
Not compliant
USP Class VI
Not compliant
AFO - Animal Free Origin
Not compliant
Industry Specific Usage (RECYCLED)
Property
Value
Statera™ portfolio
Not compliant
Industry Specific Usage (NUCLEAR)
Property
Value
Shielding Portfolio
Not compliant
PMUC certified
Not compliant
Industry Specific Usage (SEMICON)
Property
Value
ESd materials
Not compliant
Conductive materials
Not compliant
Miscellaneous Properties
Property
Value
Base Material
PEEK
Brand Family
Colors
Green
Density (g/cm3)
1.41
Water Absorption after 24 hrs immersion in water (%)
