FKM | CutWise

FKM (Viton®)

Rubber

FKM, also known by the brand name Viton®, is a fluoroelastomer that excels in chemical resistance and temperature stability. The material maintains its elastic properties across a wide temperature range and resists aggressive chemicals, oils, and fuels. This makes FKM a popular choice for demanding industrial applications, including aerospace, automotive, and chemical processing.
Well-known trade names for FKM include Viton®, Dai-El®, Dyneon®, Tecnoflon®, and Fluonox®. These grades are used worldwide in applications where high performance and reliability are required.

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Properties of FKM

Exceptional chemical resistance to oils, fuels, acids, and solvents
Excellent temperature resistance from -26 °C to +230 °C (short-term up to +250 °C)
Low gas permeability, suitable for vacuum applications
Good mechanical properties such as tensile strength and wear resistance
Resistant to ozone, UV radiation, and aging
Electrically insulating properties
Available in various hardnesses (Shore A 55–90) and colors
Low compression set, maintains shape under long-term load
Suitable for use in aggressive chemical environments

Thanks to these properties, FKM is a reliable choice for applications requiring durability, chemical resistance, and temperature stability.

Datasheet Title

Technical properties of FKM

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Product information and operations

Thickness	Dimensions	Color
0.5 mm	3000x1200 mm	Zwart
1 mm	3000x1200 mm	Zwart
1.5 mm	3000x1200 mm	Zwart
2 mm	3000x1200 mm	Zwart
3 mm	3000x1200 mm	Zwart
4 mm	3000x1200 mm	Zwart
5 mm	3000x1200 mm	Zwart
6 mm	3000x1200 mm	Zwart
8 mm	3000x1200 mm	Zwart
10 mm	3000x1200 mm	Zwart
12 mm	3000x1200 mm	Zwart

Technical properties

Algemeen

Dichtheid 1,80–2,00 g/cm³

Kleur Zwart / bruin / op aanvraag

Wateropname < 0,5 %

Temperatuurbereik

Gebruikstemperatuur minimaal -26 °C

Gebruikstemperatuur maximaal +230 °C

Mechanisch

Treksterkte 7–20 MPa

Rek bij breuk 150–300 %

Hardheid (Shore A) 55–90

Compressieset (22h/70 °C) 10–30 %

Elektrische eigenschappen

Diëlektrische sterkte 20–30 kV/mm

Volumeweerstand 10¹³–10¹⁵ Ω·cm

Diëlektrische constante (1MHz) 6–8

Thermische eigenschappen

Glasovergangstemperatuur -26 °C

Max. gebruikstemperatuur +230 °C

Lineaire uitzettingscoëfficiënt 160–200·10⁻⁶/K

Warmtegeleidingscoëfficiënt 0,2–0,3 W/m·K

Applications of FKM

Seals and gaskets in the aerospace industry

Fuel systems and engine components in automotive

Pumps, valves, and piping in the chemical industry

O-rings and seals in oil & gas installations

Electrical insulators and cable jacketing in power generation

Equipment in pharmaceutical and food industries

Vacuum applications and clean-room environments

Hoses and seals in semiconductor manufacturing

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Frequently Asked Questions about FKM

What makes FKM suitable for aggressive-chemical service?

FKM has outstanding resistance to a wide range of chemicals—oils, fuels, acids, and solvents—making it ideal for chemical-industry applications.

Is FKM resistant to high temperatures?

Yes. FKM retains its elastomeric properties up to +230 °C and can withstand short peaks to +250 °C.

How does FKM perform at low temperatures?

FKM remains flexible down to about –26 °C, depending on the formulation.

Is FKM suitable for outdoor use?

Yes. FKM resists ozone, UV, and weathering exceptionally well, making it ideal for prolonged outdoor service.

Can FKM be laser-cut or milled?

Yes. FKM can be both laser-cut and CNC-milled, depending on required precision.

Is FKM electrically insulating?

Yes. With its high dielectric strength, FKM is an excellent electrical insulator.

How does FKM compare to other rubbers like EPDM or NBR?

FKM offers superior chemical and temperature resistance, whereas EPDM excels at ozone resistance and NBR at oil and fuel resistance.

Is FKM recyclable?

Technically yes, but recycling facilities for FKM are limited and region-dependent.

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Material HB Title

FKM CUTTING

FKM (Viton®)

Properties of FKM