Fluorocarbon
(VITON / FKM)

FLUOROCARBON / FLUOROELASTOMER (VITON ®)


Trade Name(s):

Viton®

DuPont Performance Elastomers

Fluorel

3M Company

Technoflon

Solvay Solexis, USA

ASTM D1418 Designation

FKM

Standard Colour

Black

Description

Combining high temperature resistance with outstanding chemical resistance, Fluorocarbon (also known as Fluoroelastomer) based compounds approach the ideal for a universal O-ring material.

Key use(S):

Fluorocarbon seals are ideal for aircraft engines, automotive fuel handling systems. Fluorocarbon is also good for high temperature / low compression set applications. Wide chemical exposure situations. Hard vacuum service.

Temperature Range

Standard Compound: -25°C (-13°F) to +204°C (399°F) (+230°C for short periods)
Special Compound: -40°C (-40°F) to +230°C (446°F)

Hardness (Shore A)

60 to 95

Features:

Viton® has excellent resistance to high temperatures, ozone, weather, oxygen, mineral oil, fuels, hydraulic fluids, aromatics and many solvents, and therefore used for o rings and cord. Fluorocarbon possesses low gas permeability, low compression set, and good mechanical properties.

High fluorine grades of Fluorocarbon offer higher resistance to swell in high octane and oxygenated fuel blends. This gives Fluorocarbon a superior performance in Ethanol/Methanol blended gasoline.

Standard Fluorocarbon compounds are usually:

Type A

and are commonly available in 75 & 90 Shore Hardness: – V75 & V90. These compounds are normally stocked in Black although other colours can be manufactured, i.e. Brown / Green.

Other types are:

Type B

Generally used in Chemical Process plants, Power Utility Seals & Gaskets

Type F

Used for Oxygenated Automotive fuels. Concentrated aqueous inorganic acids, water and steam.

Type ETP

(also known as Viton Extreme) – Offers excellent Chemical resistance and greater performance compared to standard compounds. Used for Automotive & Off-Road – High pH lubricants, greases, & Coolants. Oil Exploration/ Production – Drilling Mud, Sour Wells. Special sealing requirements – solvents, coatings.

Additionally, specialty versions of these types are available to provide improved low temperature flexibility. These are called LT types, for example, GLT, and GFLT, and these perform like the A, and F families, respectively; GLT & GFLT provide improved low temperature performance with a TR (10) of -40°F and brittleness to -76°F.

Limitations

Fluorocarbons are not recommended for exposure to ketones, amines, low molecular weight esters and ethers, nitro hydrocarbons, hot hydrofluoric or chlorosulfonic acids, or Skydrol® fluids. They are also not recommended for situations requiring good low temperature flexibility.

Downloads

ES REF
Colour
Temp Range
Shore
Notes
Data Sheet
FKM60 BLACK -10°C to + 230°C continuous (260°C Peak) 60 For General use offering universal chemical resistance.
FKM70 BLACK -20⁰C to +205⁰C 70 For General use offering universal chemical resistance.
FKM75 BLACK -20⁰C to +205⁰C 75 For General use offering universal chemical resistance.
FKM75 (bonded seals) BLACK -20⁰C to +205⁰C 75 FKM 75 for Bonded seals.
FKM75 (vulcanised jointed rings) BLACK -15⁰C to +204⁰C continuous (+280⁰C peak) 75 FKM 75 for vulcanised jointed rings.
FKM75 Extruded Cord BLACK -20°C to 205°C 75 FKM 75 for extruded cord.
FKM75FDA (vulcanised jointed) BLACK -15⁰C to +204⁰C continuous (+280⁰C peak) 75 FDA compliant FKM for vulcanised jointed rings.
FKM75X ETP-S / EXTREME BLACK -25°C to +215°C continuous 75 Developed for severe service applications, this compound has the broadest of any Fluoroelastomer. It fills the performance gap between normal Fluoroelastomers and Perfluoroelastomers. Very good resistance to strong bases, amines and polar solvents.
FKM75X FDA ETP-S / EXTREME BLACK -20°C to +210°C continuous 75 Developed for severe service applications, this compound has the broadest fluid resistance of any other Fluoroelastomer. It complies with FDA regulation 21 CFR 177 2600 for contact with foodstuffs. Very good resistance to strong bases, amines and polar solvents.
FKM90 BLACK -20°C to 205°C 90 General use offering universal chemical resistance.
FKM90 (extruded cord) BLACK -20°C to 205°C 90 FKM 90 for extruded cord.
FKM90 Type B BLACK -20°C to 205°C 90 Explosive Decompression Grade B type. Can meet ASTM D2000 M3HK910 A1-10 B37 EF31 Z1 (Z1= B TYPE)
V60 GR GREEN -20°C to 205°C 60 Genuine DuPont polymer
V60 R RED -20°C to 205°C 60 Genuine DuPont polymer
V60 WH WHITE -20°C to 205°C 60 Genuine DuPont polymer
V70 BLACK -20°C to 205°C continuous (-30°C to 225°C peak) 70 Genuine DuPont polymer
V70BLMD Metal Detectable BLUE -15°C to +200°C 70 Developed to support use of Fluoroelastomer in food processing applications. Metal detectable elastomer O Rings help pharmaceutical and food manufacturers to reduce the risk of product contamination by early detection and containment of contamination. The material is electrically conductive. Fragments as small as 2mm can be identified by in-line metal detection and X-ray equipment. Formulated using only those ingredients determined by the United States Federal Food and Drug Administration (FDA) to be in accordance with Code of Federal Regulations Title 21 (CFR21), Section 177.2600.
V75 BLACK -20°C to 205°C continuous (-30°C to 225°C peak) 75 Genuine DuPont polymer
V75 (brown) BROWN -20°C to 205°C 75 Genuine DuPont polymer
V75 FDA BLACK -20°C to 205°C 75 Food quality. Complies With FDA Regulation 21 CFR177.1550
V75 Type B BLACK -20°C to 205°C 75 Explosive Decompression Grade B type.
V75 GF BLACK -20°C to 205°C 75 High fluorine content. Improved fuel and solvent resistance.
V75 GFLT BLACK -40°C to 205°C 75 High fluorine content. Low Temperature type. Exhibits significantly improved low temperature flex characteristics compared to standard types of fluoroelastomer
V75 GLT BLACK -40°C to 205°C continuous (225°C peak) 75 Low Temperature type. Exhibits significantly improved low temperature flex characteristics compared to standard types of fluoroelastomer. Not suitable for flex fuels.
V75 PC BLACK -20°C to 205°C continuous (-30°C to 225°C peaks) 75 Peroxide cured.
V75USP Class VI FDA BLACK -10°C to +204°C 75 Developed to support use of these Fluoroelastomers in Pharmaceutical processing and food processing applications. The desirable traits of cleanliness, low odour index are exhibited by this compound so that our customers receive an FKM product that leads the industry in cleanliness and purity. USP Class VI 121°C USP31, NF26, 2008 Animal Derivative Ingredient Free FDA CFR21 177.2600 EC 1935/2004
V75USP Class VI FDA WHITE -10°C to +204°C 75 Developed to support use of these Fluoroelastomers in Pharmaceutical processing and food processing applications. The desirable traits of cleanliness, low odour index are exhibited by this compound so that our customers receive an FKM product that leads the industry in cleanliness and purity. USP Class VI 121°C USP31, NF26, 2008 Animal Derivative Ingredient Free FDA CFR21 177.2600 EC 1935/2004
V90 AED GLT BLACK -30°C to +250°C (Static)
-40°C to +220°C (Dynamic)
90 Viton 90 Anti-Explosive Decompression, GLT Type. NORSOK M-710 Approved. AED/RGD Approval. RGD NACE TM0297 APPROVAL.
V90 AED Type B BLACK -30°C to +250°C (Static)
-15°C to +220°C (Dynamic)
90 Viton 90 Anti-Explosive Decompression, B Type. NORSOK M-710 Approved. Provides low and stable compression set at high temperature.
Viton FEP Encapsulated BLACK -20°C to +205°C
Short duration to +260°C
85 – 90 Shore A Encapsulation Material: Dupont Teflon® FEP 160 Fluoropolymer Resin Or Equivalent. Core Material: Genuine Dupont A-361C Viton® Or Equivalent. Manufactured to meet the requirements of; AS568/BS1806 tolerance specifications.
Viton PFA Encapsulated BLACK -20°C to +205°C
Short duration to +260°C
85 – 90 Shore A Encapsulation Material: Dupont Teflon® PFA350 Fluoropolymer Resin Or Equivalent Core Material: Genuine Dupont A-361C Viton® Or Equivalent. Manufactured to meet the requirements of; AS568/BS1806 tolerance specifications.

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