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Isolast® Perfluoroelastomer (FFKM)

Unrivalled chemical and thermal resistance

Quick Facts

  • Temperature resistance from -25 °C to +325 °C / -13 °F to +617 °F
  • Combines the advantages of an elastomer with the chemical resistance of a PTFE
  • Almost universal chemical compatibility
  • Materials perform well in a broad range of chemical media including ethylene oxides, acids, alkalis, amines, esters and steam
  • Exceptional hysteresis properties
  • Outstanding low long-term compression set characteristics
  • High purity, low contamination from extractables
  • Complete traceability
  • Reduce downtime and improve production efficiency
  • Sealing effectively under pressure or in a vacuum
  • Materials compliant to FDA 21 CFR.2400 (d), 3-A, USP Class VI, Cytotoxicity (USP 87)
Typical Healthcare & Medical Applications:

Universal material used in a wide variety of applications that require outstanding performance. Ideal for process systems requiring intensive CIP and SIP regimes or aggressive process media.

Products Available:

Wide variety of standard and custom designs, O-Rings

About FFKM

Isolast® is the Trelleborg Sealing Solutions range of high specification perfluoroelastomer (FFKM) compounds. We offer the widest portfolio on the market engineered to meet specific processing demands. Virtually inert, the materials perform well in a broad range of media including organic and inorganic oxides, acids, alkalis, amines, esters and steam at continuous operating temperatures from -25 °C to +325 °C / -13 °F to +617 °F.

Unrivalled Operating Characteristics

FFKM materials are terpolymers of monomers in which all hydrogen atoms have been replaced by fluorine. The absence of hydrogen in their molecular chain dramatically increases both their chemical and thermal resistance. The cross-linked molecular chains enable them to combine the resilience and sealing force of an elastomer with the chemical inertness and thermal stability of PTFE.


Isolast® Plus J9515 & J9516 - Superior sealing with FDA, USP class VI and SP 3-A compliance
Isolast® J9538 - A new level of performance for pharmaceutical, healthcare & medical and food handling applicaitons

Local Contact

To speak to a local healthcare & medical specialist, call the number listed for your region:

+1 920 682 2448

+86 18602183211

+49 (0) 711 7864 536


Digital Tools


Trelleborg Advances Contract Manufacturing Services for Drug-Device Combination Products At MD&M West 2017, Trelleborg Sealing Solutions successfully highlighted its contract manufacturing services for delivering drug-device components – the combination of any two or three products categories: medical devices, drugs and/or biologics.

#TrelleborgThinkTank Sparks Innovation at MD&M West 2017 MD&M West 2017 is the perfect venue for attendees to share ideas and encourage innovation using the hashtag #TrelleborgThinkTank, an exciting initiative from Trelleborg, the global leader in engineered polymer solutions.

Trelleborg Demonstrates Rapid Medical Device Prototyping and Enhanced LSR Technology at MD&M West 2017 MD&M West 2017 Booths 1605 & 2818 will serve as the perfect platforms for Trelleborg Sealing Solutions to emphasize its rapid medical device prototyping that facilitates bringing medical devices to market faster and helps to drive innovation.


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