What's the fluoroelastomer(FKM)?
Fluoroelastomer is one of the newest and most promising members of the elastomer family.
Fluoroelastomer resist a wide variety of corrosive fluids at elevated temperatures while retaining their mechanical properties.Other important features of Fluoroelastomer include resistance to weathering ozone,oxygen and flame...good tensile strength,resilience,low compression set.Because it has above excellent propertiews,fluoroelastomer is widely used in automobile,aerospace,aircraft,chemical processing,petrochemical and power supply industries.
- Heat Resistance over 250℃ even up to 275℃
- Solvent resistance,the widest applicable field
- Acid resistance & low permeability
- Flame Retardant & self extinguished
- Oil resistance, the best among the elastomers
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FKM Product Introduction

Comparison of elastomer properties
|
Common Name |
ACM |
CR |
EPDM |
NBR |
VMQ |
FVMQ |
FKM |
FFKM |
|
Heat resistance |
++++ |
++ |
++++ |
+++ |
+++++ |
++++ |
+++++ |
+++++ |
|
Low temperature resistance |
++++ |
+++++ |
+++++ |
+++++ |
+++++ |
+++++ |
+++ |
++ |
|
Dielectric properties |
+++ |
+++ |
+++++ |
+++ |
++++ |
++++ |
++++ |
+++++ |
|
Solvent resistance |
++++ |
+++ |
++++ |
+++ |
+++++ |
+++++ |
+++++ |
+++++ |
|
Flame Retardance |
++ |
++++ |
++ |
++ |
++++ |
++++ |
+++++ |
+++++ |
|
Weatherability |
+++++ |
+++++ |
+++++ |
+ |
+++++ |
+++++ |
+++++ |
+++++ |
|
Steam Resistance |
+ |
++++ |
++++ |
++++ |
++++ |
++++ |
+++++ |
+++++ |
|
Acid Resistance |
+++ |
++++ |
+++++ |
++++ |
++++ |
++++ |
+++++ |
+++++ |
|
Alkali Resistance |
+++ |
++++ |
+++++ |
++++ |
+++++ |
+++++ |
+++++ |
+++++ |
|
Oil Resistance |
++++ |
+++ |
+ |
++++ |
+++ |
++++ |
+++++ |
+++++ |
|
Permeation Resistance |
++++ |
+++ |
+++ |
++++ |
++ |
+++ |
+++++ |
+++++ |
|
+++++:Excellent ++++:Good +++:Fair ++:Poor +:Not recommended |
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The categories and features of FSE fluoroelastomer
|
Grade |
Categories |
Fluorine |
Service |
Special |
|
VDF and HFP Copolymer |
66% |
-25~230℃ |
Miscellaneous applications with |
|
|
VDF,HFP and TFE Terpolymer |
68-69% |
-30~230℃ |
Better resistance to heat&chemicals, |
|
|
VDF,HFP and TFE Terpolymer |
66-67% |
-35~230℃ |
Excellent resistance to fuel and low |
|
|
VDF,HFPand TFE Terpolymer |
70% |
-40~230℃ |
The best fuel resistance grades among |
|
|
Peroxide Curable |
67~70% |
-25~200℃ |
Applications for super chemical |
|
|
Low temperature resistance FKM |
64~67% |
-45~200℃ |
Applications for low temperature |
|
|
BASE Resistance FKM |
65% |
-25~230℃ |
Applications for base |
|
|
Perfluoroelastomer(FFKM) |
72~73% |
-10~315℃ |
Applications for super high temperature |
|
|
Fluorosilicone |
36% |
-60~200℃ |
Better cold resistance than FKM, |









