FFKM (Perfluoroelastomer) Rubber Sheet
International Seal supplies FFKM rubber sheet, also known as perfluoroelastomer rubber sheeting, for specialist industrial sealing, gasketing and engineering applications requiring exceptional chemical resistance and high-temperature performance.
FFKM (Perfluoroelastomer) is a high-performance elastomer combining the flexibility and sealing characteristics of rubber with chemical resistance approaching that of PTFE. It is widely specified for demanding applications involving aggressive chemicals, elevated temperatures and challenging process environments where conventional elastomers may not provide sufficient performance. Our FFKM rubber sheets are offered in a range of sizes, with thicknesses ranging from approximately 1.68 mm to 6.73 mm, subject to compound selection and availability.
International Seal supplies FFKM rubber sheeting to distributors, OEMs and industrial customers throughout the UK and internationally, supporting specialist requirements, repeat orders and volume supply.
FFKM Rubber Sheet Specifications
FFKM rubber sheet provides exceptional chemical resistance, thermal stability and elastomeric sealing properties for demanding industrial environments.
- Exceptional Resistance to a Broad Range of Chemicals
- High-Temperature Sealing Capability
- Excellent Resistance to Many Aggressive Process Fluids
- Good Resistance to Ozone & Atmospheric Ageing
- Low Permeability to Many Fluids
- Suitable for Gaskets, Washers & Sealing Components
- Multiple Thicknesses Available
Specific temperature limits, chemical compatibility, hardness, colour and regulatory compliance depend on the selected FFKM compound.
FFKM Rubber Sheet Sizes
International Seal supplies specialist FFKM rubber sheeting for demanding industrial applications where exceptional chemical resistance and elevated-temperature performance are required. FFKM sheet availability depends on the specific perfluoroelastomer compound, manufacturing process and required dimensions. Unlike more commonly available elastomer materials, FFKM sheeting is generally sourced against individual technical specifications.
- FFKM rubber sheet thicknesses
- Sheet dimensions and material formats
- Specialist perfluoroelastomer grades
- Shore A hardness requirements
- High-temperature and chemical-resistant compounds
- Custom-cut components and gasket applications
- Prototype and production quantities
Available sheet sizes, thicknesses, minimum order quantities and lead times are confirmed individually against the required material specification. If you have an existing FFKM sheet reference, drawing or application requirements, our team can review the specification and establish suitable supply options.
FFKM Rubber Sheet Properties
Exceptional Chemical Resistance
FFKM offers excellent resistance to a broad range of aggressive chemicals, including many acids, solvents, hydrocarbons and process fluids. This makes it particularly suitable for specialist sealing applications where chemical compatibility is a critical requirement. Certain chemicals and operating conditions may still affect FFKM compounds, so suitability should always be checked against the specific material grade.
High-Temperature Resistance
FFKM offers excellent thermal stability and can provide high-temperature performance beyond that of many conventional elastomers. Depending on the compound, some specialist FFKM grades can withstand continuous operating temperatures approaching 300°C or higher. Actual temperature limits depend on the compound formulation, operating media, mechanical loading and exposure duration.
Sealing Performance
FFKM combines broad chemical resistance with the flexible characteristics of an elastomer, allowing it to be used for flat gaskets, sealing washers and specialist sealing components. The compression behaviour and sealing performance depend on material hardness, compound design, gasket geometry and operating conditions.
Resistance to Ageing & Process Environments
FFKM provides excellent resistance to ozone and atmospheric ageing, alongside strong stability in many demanding chemical processing environments. Its performance makes it useful for applications where material degradation could cause equipment downtime, contamination or maintenance requirements.
FFKM Sheet for Gaskets & Sealing Components
FFKM rubber sheet can be used to manufacture flat gaskets, washers and specialist sealing components for equipment exposed to aggressive chemicals or elevated temperatures. Sheets can be cut into circular, rectangular or bespoke profiles to accommodate flange connections, equipment housings and specialist industrial assemblies. FFKM is frequently considered where conventional elastomers cannot provide the required resistance to the operating environment.
When specifying an FFKM gasket, important considerations include:gasket, important considerations include:
- Operating temperature
- Oil, fuel and chemical exposure
- Required sheet thickness
- Compound hardness
- Compression requirements
- Internal and external dimensions
- Mechanical loading
International Seal can support distributors and OEMs requiring specialist FFKM sheet for industrial gasketing, replacement components and repeat production requirements.
FFKM Rubber Sheet FAQs
What is the difference between FFKM and FKM rubber sheet?
FKM is a fluoroelastomer offering excellent resistance to many oils, fuels and chemicals. FFKM is a perfluoroelastomer that generally provides broader chemical resistance and can offer higher temperature capability, depending on the formulation.
Is FFKM rubber sheet chemically resistant?
Yes. FFKM provides exceptional resistance to a broad range of aggressive chemicals and solvents. However, not all FFKM compounds are suitable for every chemical environment, and compatibility must be confirmed against the selected grade.
What temperature can FFKM rubber sheet withstand?
Temperature capability depends on the compound. Some specialist FFKM grades can operate at continuous temperatures approaching 300°C or higher, although other grades have lower limits.
Is FFKM the same as Kalrez?
FFKM is the generic material classification for perfluoroelastomers. Kalrez® is a registered trademark for specific perfluoroelastomer products. Not all FFKM rubber sheet is Kalrez-branded material.
Why is FFKM rubber sheet more expensive than FKM?
FFKM uses specialist perfluorinated polymer technology and more complex material processing. It is generally more expensive than FKM but can provide important performance advantages in demanding applications.
Need a FFKM Rubber Sheet?
International Seal supplies FFKM rubber sheets for specialist industrial sealing, gasketing and engineering applications across the UK and internationally. Send us your required thickness, quantity, operating temperature and chemical exposure details and our team will review your requirements and provide a competitive quotation.
For specialist applications, please include any material grade, hardness, chemical compatibility or certification requirements.