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Fluoroelastomer -FKM/FPM

Fluoroelastomer is a synthetic polymer elastomer containing fluorine atoms on the carbon atoms of the main chain or side chain. The introduction of fluorine atoms gives rubber excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance, and is widely used in aerospace, aviation, automotive, petroleum and household appliances.
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Fluoroelastomer rubber compound-FKM


FKM rubber products have excellent high temperature resistance, chemical corrosion resistance, oil resistance, good permanent deformation performance, flame resistance and gas permeability.


Fluoroelastomer is mainly used in high and low temperature sealing, vacuum instrumentation and equipment, chemical equipment, automobile, aviation and other fields.


Herchy Rubber has a professional R&D team to meet the customization needs of our customers.

●Bisphenol vulcanization system and peroxide vulcanization system

●Develop and produce products for molding, injection, extrusion and other processing methods.

●Customize fluoroelastomer compound with hardness 50-90 degrees, various colors and applications according to customers' requirements.


Herchy Vulcanization type Fluorine content Mooney viscosity Density Tensile strength Elongation at break TR10 Compression set Application Character







200℃*72h ASTM D395 Type B
Grade % ML(1+10)121℃ g/cm3 Mpa % %
FKM-65B20 Bisphenol 65.9 20 1.8 12.3 170 -17 17 O-rings;Gasket Low compression set;
Good liquidity;
FKM-65B40 Bisphenol 65.9 40 1.81 14.3 180 -17 16 O-rings;Gasket High mechanical strength;
Low compression set
FKM-65B60 Bisphenol 65.9 60 1.81 15.5 180 -17 16 O-rings;Gasket High mechanical strength;
Low compression set
FKM-68B40 Bisphenol 68.5 40 1.85 14.3 220 -14 26 O-rings;Gasket Good liquidity;
Excellent resistance to chemical media;
High temperature resistance
FKM-68B60 Bisphenol 68.5 60 1.85 16.2 200 -14 26 O-rings;Gasket High mechanical strength;
Excellent resistance to chemical media;
High temperature resistance
FKM-65B30S Bisphenol 65.9 30 1.80 15.0 190 -20 21 Extruded products, injected products, molded products Low temperature resistance;
High mechanical strength;
Good liquidity;
FKM-70P30 Peroxide 70 30 1.9 18.5 220 -7 36 Extruded products, injected products, molded products Good liquidity;
Excellent acid and alkaline resistance;
Excellent resistance to chemical media;
High temperature resistance
FKM-68P45 Peroxide 68 45 1.85 16.5 280 -16 36 Extruded products, injected products, molded products Good liquidity;
Excellent acid and alkaline resistance;
Excellent resistance to chemical media;
High temperature resistance


1.Seal

Engine seal

Mine seal

Chemical seal

Superheated steam seal

Valve seal washer

Leather bowl

Oil seal


2. Hose

High temperature rubber hose

Automobile fuel hose

Aircraft fuel hose

Corrugated joint pipe


3. Cables and wires

Wire and cable made of fluoroelastomer flexes well and has good insulation properties


4. Fiberglass tape

High temperature of 300 ℃ and chemical corrosion resistance


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