Fluorocarbon(FPM,FKM,VITON)
Fluorocarbon is a well-known high performance rubber,and especially it has excellent resistance to high temperature,ozone,weather,oxygen,mineral oil,fuels,hydraulic fluids,aromatics and many organic solvwents and chemicals.Now we can supply parts made by.
Fluorine Content
Viton system gum like general type(A-TYPE,66% fluorine),middle fluorine content type(B-,GBL-TYPE,67-68.5% fluorine),high fluorine content type(F-,GF-TYPE,70% fluorine),improving low temperature flexibility type(GLT-GFLT)and excellent resistance to more chemicals and solvents-Viton ETP Extreme.We also can supply excellent acid and alkali resistance parts made by VITON TBR.
Cure system-Bisphenol-Cured vs.Peroxide-Cured
●Standard FKM compounds are Bisphenol cured.FKM compounds with peroxide-cured possess better acid solution resistance than the bisphenol cured,and can replace litharge-cured applied in acid solution.In Some lubricants adding a few organic amide or amine,choosing peroxide curing system Viton will be better than bisphenol curing system
Other Common Variations
●FKM can also be submitted for approval to Underwriters Laboratories(UL)for use in applications as prescribed in UL157.
●FKM has excellent resistance to high temperature,oil,solvent,flame,chemical and weather,and it is usually applied in automotive,chemical processing,aerospace and many industrials
●Viton GLT is broadly used in thermal range of -40℃to +250℃ and it has outstanding resistance to aggressive HTS-type oils which are comminly used in aerospace industry.
●Viton ETP is usually applied in chemical industrial
●In some fuels adding several methanol,viton F and B-type are more usable than A-type especially F-type.If it requires lower temperature,GFLT and GBLT will be available
●Viton TBR 605C (TFE/propylene polymer)is better base and steam resistant than other general vitons.It can be use in amine,amide and some bases.
Performs Well In…
●Petroleum products
●Fuel or blend with methanol or ethanol
●Diesel or blend with biodisesl
●Mineral oil and grease
●Silicone oil and grease
●High cacuum
●Ozone,weather and very high temperature air
●Strong acid
Doesnt Perform Well In…
●Ketones
●Low molecular weight organic acids(formic and acetic acids)
●Superheat steam
●Low molecular weight esters and ethers.
●Phosphate ester based hydraulic fluids-Skydrol(R)
General Information
ASTM D1418 Designation
FKM
ISO/DIN1629 Designation
FKM
ASTM D200/SAE J 200 Codes
HK
Standard Color(S)
Black
Hardness Range
50 to 90 Shore A
Relative Cost
High
