Category overview

Fluoroelastomers / Fluorinated Rubbers

Based on 735 products - Last update on the Jun 26, 2025

Fluoroelastomer/Fluorinated Rubber (FKM) appears as a dense, smooth elastomer ranging from black to light amber. Key features include exceptional resistance to fuels, oils, and aggressive chemicals, outstanding heat resistance, excellent compression set properties, exceptional aging stability, good mechanical properties, and resilience. FKM is widely used in aerospace o-rings, automotive fuel system components, chemical processing equipment, and oil exploration equipment. 

Alternatives include FFKM and HNBR. The industry is trending toward developing grades with improved low-temperature performance and processing characteristics. Various types exist according to fluorine content and monomer composition, including dipolymer (66% fluorine), terpolymer (68% fluorine), tetrapolymer (70% fluorine), and pentapolymer versions (up to 71% fluorine).

Applications

Claims / benefits

Properties

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Tecnoflon® PFR X6965M

by Syensqo

Tecnoflon® PFR X6965M by Syensqo is a high temperature non-fluorosurfactant perfluoroelastomer (FFKM). It withstands extreme heat and delivers unmatched purity and reliability without the need for particle-causing fillers. It delivers exceptional sealing performance in the most demanding environments. <br> <ul style="padding-left: 40px;"><li> It offers continuous operating temperatures up to 320°C, surpassing the capabilities of conventional FFKMs.</li><li> It offers excellent resistance to fluorine, oxygen, and hydrogen plasmas.</li> <li> Tecnoflon® PFR X6965M has low stiction making it particularly well-suited for gate and isolation valve applications.</li> </ul>
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Tecnoflon® PFR X6265B

by Syensqo

Tecnoflon® PFR X6265B by Syensqo is a nitrile curable, non-fluorosurfactant perfluoroelastomer (FFKM) polymer. It is specifically designed for semiconductor dry and plasma applications. <br> <ul style="padding-left: 40px;"><li>It is made entirely without surfactants and meets the seal and O-rings industry’s growing demand for a sustainable, resilient supply chain, without compromising on performance. </li> <li>Tecnoflon® PFR X6265B meets the increasingly demanding conditions involved in the production of today’s most advanced semiconductors. </li> <li>It is suitable for both dry and wet fabrication processes, offering outstanding performance in the harshest environments, such as those with corrosive chemical contact, temperatures over 320°C and intense plasma conditions. </li> <li>Tecnoflon® PFR X6265B offers excellent chemical resistance, making it ideal for high-end energy, transportation, and industrial applications. </li></ul>
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Tecnoflon® PFR X7100

by Syensqo

Tecnoflon® PFR X7100 by Syensqo is a peroxide-curable, non-fluorosurfactant perfluoroelastomer (FFKM) polymer. It is suitable for both dry and wet fabrication processes, offering outstanding performance in the harshest environments, such as those with corrosive chemical contact, temperatures over 320°C and intense plasma conditions. Tecnoflon® PFR X7100 offers excellent chemical resistance, making it ideal for high-end energy, transportation, and industrial applications.
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Viton™ A-331C

by Chemours

Viton™ A-331C by Chemours is an intermediate viscosity, fluoroelastomer dipolymer grade consisting of hexafluoropropylene and vinylidene fluoride plus cure chemicals. It offers good mold flow, excellent storage stability, improved demolding hot tear resistance, good mold release with less mold fouling and good compression set resistance. It is fully precompounded with reduced curative level and incorporated process aid. It is suitable for processing by transfer molding, injection molding, compression molding and extrusion. Viton™ A-331C is suitable for O-rings, seals, gaskets, profile and extruded O-ring cord & hose applications.
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Tecnoflon® PFR X6965M

by Syensqo

Tecnoflon® PFR X6965M by Syensqo is a high temperature non-fluorosurfactant perfluoroelastomer (FFKM). It withstands extreme heat and delivers unmatched purity and reliability without the need for particle-causing fillers. It delivers exceptional sealing performance in the most demanding environments. <br> <ul style="padding-left: 40px;"><li> It offers continuous operating temperatures up to 320°C, surpassing the capabilities of conventional FFKMs.</li><li> It offers excellent resistance to fluorine, oxygen, and hydrogen plasmas.</li> <li> Tecnoflon® PFR X6965M has low stiction making it particularly well-suited for gate and isolation valve applications.</li> </ul>
  • Recently launched
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Viton™ A-361C

by Chemours

Viton™ A-361C by Chemours is an intermediate viscosity, fluoroelastomer dipolymer grade consisting of hexafluoropropylene and vinylidene fluoride plus cure chemicals and metal adhesion promoter. It is fully precompounded with reduced curative level and improved processing. It offers excellent storage stability, good mold flow, improved demolding hot tear resistance, good mold release with less mold fouling, good fluid resistance and good heat resistance. Also offers good metal bonding with standard industrial primers. It is processed by transfer molding, injection molding and compression molding. Viton™ A-361C is suitable for O-rings, gaskets, valve stem and crankshaft seal applications.
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Fluoroelastomers / Fluorinated Rubbers