FKM (fluoroelastomer) is FITCO's core high-performance material line, structured around application-specific grades rather than a single generic compound. Material selection is based on fluid, temperature, pressure, movement, operating cycle and regulatory requirement — not the FKM label alone.
Select the FKM grade that matches your specific service condition: general-purpose for standard fuel/oil duty, high-fluorine for aggressive fuels, low-temperature for cold-climate or aerospace service, AED/RGD-resistant for gas decompression cycling, or food/pharma-compliant grades for regulated environments.
Standard-duty grade for typical fuel, oil and mineral-hydraulic service.
Improved resistance to aromatic fuels and oxygenated blends for aggressive fuel-system service.
Extended cold-side service (GLT/GFLT-type grades) for aerospace and cold-climate applications, typically to around -40°C.
Cure system offering improved compression set retention for select service conditions.
Decompression-resistant grade for gas service — qualification is compound-specific.
FDA and USP Class VI compliant grades — compliance applies only to the specific documented compound.
Grades selected for extended fuel and aggressive-fluid exposure.
Grades selected for vacuum service and low gas-permeation requirements.
| Hardness | 60–90 Shore A |
| Temperature Range | -20°C to 200°C continuous, 230°C short-term (grade dependent) |
| Relevant Standards / Certifications | AS568, ISO 3601, BS 1806, DIN 3771, JIS B2401; ASTM D1418 |
FKM is the default high-performance elastomer for hydrocarbon and fuel-based service. Where the fluid list includes ketones, amines or strong acids/bases, FEPM or FFKM should be evaluated instead.
Precision-molded circular seals available across FITCO's full specialty material range.
View O-Rings →Extruded cord stock in FKM and Silicone — cut, spliced and vulcanized to size.
View Cords →Application-specific seal kits in FKM and Silicone, bundled to equipment BOM or drawing.
View O-Ring Kits →Share your fluid, temperature, pressure, movement and any regulatory requirement — FITCO will review and recommend the appropriate grade.
FKM is used as the generic material name. Viton™ is referenced only where the genuine branded product and documentation support the claim.
Share your fluid, temperature, pressure and certification requirement — FITCO will review and propose a suitable Specialty FKM compound.
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