Fluorocarbon(FPM, FKM, VitonTM)

Fluorocarbon(FPM, FKM, VitonTM)

Fluorocarbon is a well-known high-performance rubber, and especially it has excellent resistance to high temperatures, ozone, weather, oxygen, mineral oil, fuels, hydraulic fluids, aromatics and many organic solvents and chemicals.

Fluorine Content

VitonTM system gum like general type (A-TYPE, 66% fluorine), middle fluorine content type GBL-TYPE, 67-68.5% fluorine), high fluorine content type GF-TYPE, fluorine ), improving low-temperature flexibility type (GLT-, GFLT) and excellent resistance to more chemicals and solvents– Viton TM ETP Extreme. We also can supply excellent acid and alkali resistance parts made by AFLAS’.

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. In Some lubricants adding a few organic amides or amines, choosing the peroxide curing system Viton”/ will be better than the bisphenol curing system.

Description

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 proc..essing, aerospace and many industrials.
  • Viton”‘ GLT is broadly used in thermal range of -400C to +2500C and it has outstanding resistance to aggressive HTS-type oils which are commonly used in aerospace industry.
  • Viton TM ETP is usually applied in chemical industrial,
  • In some fuels adding several methanol, Viton T* F and B-type are more usable than A-type especially F-type. If it requires lower temperature, GFLT and GBLT will be available .
  • AFLAC (TFE/propylene polymer) is better base and steam resistant than Other general Vitons. It can be use in amine, amide and some bases.

Viton TM is a registered trademark Of Chemours Fluoroelastomer.
AFLAS€ is a registered trademark of AGC Chemicals.

Performs Well In…

  • Petroleum products
  • Fuel or blend with methanol or ethanol
  • Diesel or blend with biodiesel
  • Mineral oil and grease
  • Silicone oil and grease
  • High vacuum
  • Ozone weather and very high-temperature air

Doesn’t 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 – Skydrof

General Information

ASTM D1418 Designation FKM
ISO/DIN 1629 Designation FKM
ASTM D2000 / SAE J 200 Codes HK
Standard Color(s) Black
Hardness Range 50 to 95 Shore A
Relative Cost High

Service Temperatures

Standard Low Temperature -26°C -14.8°F
Standard High Temperature 250°C 482°F
Special Compound Low Temperature -40°C -40°F
Special Compound High Temperature 275°c 527°F