Perfluoroelastomer (FFKM)

Perfluoroelastomer (FFKM)

Description

Perfluoroelastomers show ultimate performance among all elastomers. They are resistant to nearly every chemical class with some grades offering heat resistance over 300°C, this makes FFKM the material of choice for high demanding sealing applications.

Application

Application advantages:
• Excellent heat resistance
• Resistant to almost every chemical class
• Excellent outgassing performance in vacuum environments.
• Wide temperature range -30° C to +300° C
Application limitations:
• Avoid low-molecular-weight, fully halogenated fluids and molten alkali metals.Strong oxidizing acids may causesome swelling
• Helium permeability is slightly higher than fluoroelastomer compounds
• Extreme high cost.
Usage:
• All areas where extreme critical application is required.

Physical propertiesASTM Method
FFKM-HSFFKM-HS (I)FFKM-CSFFKM-PSFKM-7512FKM-LTFKM-AEDFKM-90HNBR 7513HNBR 9012 HNBR-AED HNBR-LTFVMQ
ColourBLACKBLACKBLACKWHITEWHITEBLACKBLACKBLACKBLACKBLACKBLACKBLACKBLACKBLUE
Specific Gravity-2.022221.831.88-BLACK-----
Hardness Shore AD2240817876747572948.67288-8971
Elongation at Break %D63815315212923015016365100206163185108150
Tensile Strength MpaD6381711161112151711131020137
Compression set 70 Hrs@ 200˚CD39514141518202016252222182014
Max. Service Temperature-316316275316204204204204150150150150150
Min. Service Temperature ˚C------19-40-26-19-32-32-35-46-72