FKM (Fluoroelastomer) Rubber Sheet
International Seal supplies FKM rubber sheet, also known as fluoroelastomer rubber sheeting, for industrial sealing, gasketing and engineering applications requiring resistance to elevated temperatures, oils, fuels and a wide range of chemicals.
FKM is a high-performance synthetic elastomer offering excellent resistance to many hydrocarbon-based fluids, lubricants and aggressive operating environments. It is widely used for flat gaskets, sealing washers, protective components and specialist industrial applications where conventional rubber materials may not provide sufficient performance. Our FKM rubber sheets are available in 24″ × 24″ sizes, with thicknesses ranging from approximately 1.68 mm to 6.73 mm.
International Seal supplies FKM rubber sheeting to distributors, OEMs and industrial customers throughout the UK and internationally, supporting individual requirements, repeat orders and volume supply.
FKM Rubber Sheet Specifications
FKM rubber sheet provides a combination of thermal stability, chemical resistance and sealing performance for demanding industrial environments.
- Excellent Resistance to Many Oils, Fuels & Lubricants
- Suitable for Elevated-Temperature Applications
- Good Resistance to Many Hydrocarbon Solvents
- Good Resistance to Ozone & Weathering
- Good Ageing Resistance
- Suitable for Gaskets, Washers & Sealing Components
- Multiple Thicknesses Available
FKM is sometimes referred to as Viton™, a well-known fluoroelastomer trademark. Temperature capability, hardness and chemical compatibility depend on the specific FKM formulation.
FKM Rubber Sheet Sizes
Our standard FKM rubber sheets are supplied in a 24″ × 24″ format, equivalent to approximately 609.6 × 609.6 mm. A range of thicknesses is available to suit different gasketing, sealing and fabrication requirements.
| Size (inch) | Tolerance (inch) | Thickness (mm) |
|---|---|---|
| 24x24x0.066 | 0.008 | 1.68 |
| 24x24x0.07 | 0.008 | 1.78 |
| 24x24x0.079 | 0.008 | 2.01 |
| 24x24x0.093 | 0.012 | 2.36 |
| 24x24x0.099 | 0.012 | 2.51 |
| 24x24x0.125 | 0.012 | 3.18 |
| 24x24x0.134 | 0.012 | 3.40 |
| 24x24x0.188 | 0.012 | 4.78 |
| 24x24x0.203 | 0.012 | 5.16 |
| 24x24x0.265 | 0.012 | 6.73 |
For repeat quantities or specific thickness requirements, send us the required dimensions and quantity for quotation.
FKM Rubber Sheet Properties
High-Temperature Resistance
FKM rubber provides excellent resistance to elevated temperatures compared with many conventional elastomers, making it suitable for demanding sealing environments.
Many standard FKM compounds are capable of continuous service at temperatures around 200°C, although actual limits depend on the grade, media and operating conditions.
Oil & Fuel Resistance
FKM offers excellent resistance to many petroleum-based oils, fuels, greases and lubricants. This makes FKM rubber sheet particularly suitable for gaskets and sealing components used in automotive systems, hydraulic equipment, industrial machinery and fuel-handling applications.
Chemical Resistance
FKM provides good resistance to a wide range of hydrocarbons, oils and industrial chemicals. However, standard FKM compounds are not universally chemical resistant and can be unsuitable for certain ketones, amines, low-molecular-weight esters and other aggressive media. Chemical compatibility should always be checked against the specific operating conditions.
Weathering & Ageing Resistance
FKM offers excellent resistance to ozone, atmospheric ageing and environmental exposure, allowing it to maintain useful sealing properties in many demanding industrial applications.
FKM Sheet for Gaskets & Sealing Components
FKM rubber sheet is particularly suited to manufacturing flat gaskets, washers and sealing components for applications involving elevated temperatures or exposure to compatible oils, fuels and chemicals. Sheets can be cut into circular, rectangular or bespoke profiles to match flange connections, equipment housings and industrial assemblies.
When selecting an FKM gasket, important considerations include:
- Operating temperature
- Chemical and fluid exposure
- Required sheet thickness
- Compound hardness
- Compression requirements
- Flange and mating surface design
- Internal and external dimensions
International Seal can support distributors and OEMs requiring FKM sheet for repeat gasket production, replacement components and industrial sealing applications.
FKM Rubber Sheet FAQs
Is FKM the same as Viton?
FKM is the generic material classification for fluoroelastomers. Viton™ is a registered trademark associated with particular fluoroelastomer products. Not all FKM rubber sheet is Viton-branded material.
Is FKM rubber sheet oil resistant?
Yes. FKM provides excellent resistance to many petroleum-based oils, fuels, greases and lubricants, making it suitable for industrial and automotive sealing applications.
What temperature can FKM rubber sheet withstand?
Many standard FKM formulations are suitable for continuous operation around 200°C, although the precise limit depends on the material grade, operating media and exposure duration.
Is FKM rubber sheet chemically resistant?
FKM provides excellent resistance to many oils, hydrocarbons and industrial chemicals. However, compatibility varies between compounds and must be verified for the specific media and operating temperature.
Can FKM rubber sheet be used for gaskets?
Yes. FKM rubber sheet is commonly used to manufacture flat gaskets, washers and sealing components for demanding industrial applications.
Need a FKM Rubber Sheet?
International Seal supplies FKM rubber sheets for industrial sealing, gasketing and fabrication requirements across the UK and internationally. Send us your required thickness, quantity and application details and our team will provide a competitive quotation.
For applications involving elevated temperatures or aggressive chemicals, include the operating media and temperature so that the suitability of the material can be reviewed.