FKM (Fluorocarbon Rubber) and FFKM (Perfluoroelastomer) are both high-performance fluorinated elastomers, but they are designed for different levels of chemical and temperature resistance.

FKM O-rings provide good resistance to oils, fuels, hydrocarbons, many chemicals, and elevated temperatures. They are widely used in general industrial sealing, automotive, aerospace, oil and gas, and chemical applications.

FFKM O-rings provide a higher level of chemical and thermal resistance. Their highly fluorinated polymer structure provides excellent resistance to many aggressive chemicals, solvents, acids, bases, and demanding high-temperature environments.

FFKM is commonly selected for semiconductor equipment, vacuum systems, chemical processing, and other critical sealing applications where conventional FKM may not provide sufficient performance.

However, FFKM is not always necessary. The correct material should be selected according to the actual temperature, pressure, chemical media, vacuum conditions, plasma exposure, and service requirements.

Not sure whether FKM or FFKM is right for your application? Send us your operating conditions for a material recommendation.

Yes. FFKM O-rings are widely used in demanding semiconductor and vacuum equipment applications because of their excellent chemical resistance, temperature resistance, and sealing performance.

BoilPeak Seals develops and manufactures FFKM sealing solutions for semiconductor manufacturing equipment, vacuum systems, and other demanding applications.

When selecting a semiconductor FFKM O-ring, important factors include:

Process chemicals and gases
Operating temperature
Vacuum conditions
Pressure
Plasma exposure
Compression set
Cleanliness requirements
Particle control
Required service life
Installation position

Different semiconductor processes require different material characteristics. Therefore, FFKM material selection should always be based on the actual equipment and process conditions.

Send us your equipment model, existing seal specification, process media, and operating conditions for technical evaluation.

Yes. BoilPeak Seals develops and manufactures FFKM compounds that can be evaluated as alternatives to selected grades from major international FFKM brands, including Kalrez®, Chemraz®, and Perlast®.

Our FFKM materials are available in different performance categories, including high-temperature, chemical-resistant, and high-purity applications.

However, different FFKM grades can have significant differences in:

Temperature resistance
Chemical compatibility
Compression set
Mechanical properties
Plasma resistance
Cleanliness
Service life

For this reason, we recommend evaluating the actual material grade and application conditions rather than selecting a replacement based only on the brand name.

For an FFKM alternative evaluation, please provide:

Original brand and material grade
O-ring size
Operating temperature
Chemical or process media
Pressure or vacuum conditions
Static or dynamic sealing
Semiconductor process information, if applicable
Current service life or failure problem

Our technical team can then recommend a suitable BoilPeak FFKM material for testing and qualification.

Looking for a Kalrez®, Chemraz®, or Perlast® alternative? Send us your existing part number or material grade.

BoilPeak Seals supplies both standard and custom FFKM O-rings for industrial, semiconductor, vacuum, and other demanding applications.

Our capabilities include:

AS568 O-rings
ISO 3601 O-rings
Metric O-rings
Custom-size O-rings
Non-standard O-rings
Special-profile seals

For custom requirements, we can manufacture FFKM O-rings according to customer drawings, specifications, or existing samples.

You can provide:

2D PDF drawings
DWG drawings
STEP or other 3D CAD files
Existing part numbers
O-ring dimensions
Technical specifications
Physical samples

Have a non-standard FFKM O-ring size? Send us your drawing or sample for evaluation.

Yes. Custom FFKM sealing components are an important part of BoilPeak Seals' manufacturing capabilities.

In addition to standard O-rings, we can develop and manufacture customized sealing solutions such as:

Custom FFKM O-rings
Rectangular seals
Custom molded seals
Special-profile seals
Semiconductor equipment seals
Vacuum sealing components
Rubber-to-metal bonded sealing components

Our engineering team can review your dimensions, drawing, material requirements, operating conditions, and application environment to determine the appropriate material and manufacturing process.

For new applications, we can also assist with material selection and product development.

Send us your drawing, sample, or technical requirements to discuss a custom FFKM sealing solution.

To provide an accurate quotation and recommend a suitable FFKM O-ring, we normally need the following information:

O-ring size or drawing
Standard number, if applicable
FFKM material or grade, if known
Required quantity
Operating temperature
Operating pressure
Chemical or process media
Vacuum conditions, if applicable
Static or dynamic sealing
Plasma exposure, if applicable
Semiconductor process information, if applicable
Existing brand or competitor grade, if applicable

If you do not have complete technical information, you can still send us your existing O-ring, part number, drawing, photograph, or application details.

Our technical team can review the available information and help determine a suitable FFKM sealing solution.

Send your specifications to BoilPeak Seals for an FFKM O-ring quotation.