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High resistance to aggressive automotive fluids including modern low-SAPS engine oils and biofuels.
Excellent high-temperature performance with continuous service capability up to 200 °C.
Outstanding compression set resistance, ensuring long-term sealing integrity under dynamic conditions.
Low gas permeability, making it ideal for vacuum and high-pressure fluid sealing applications.
Good processability in standard rubber compounding and molding equipment.
Automotive fuel system components: fuel rails, injectors, and vapor recovery seals.
Engine oil management systems: turbocharger seals, valve stem seals, and oil pan gaskets.
Industrial hydraulic and pneumatic seals exposed to hot, aggressive media.
Aerospace fluid handling components requiring FAA-compliant elastomeric performance.
Chemical processing equipment seals compatible with aromatic hydrocarbons and polar solvents.
| Chemical Type | Fluoroelastomer (FKM), vinylidene fluoride–hexafluoropropylene–tetrafluoroethylene terpolymer |
| Product Form | Uncured gum stock in bale form |
| Appearance | Light tan to amber-colored, homogeneous solid |
| Primary Applications | Dynamic and static seals in demanding automotive, aerospace, and industrial environments |
| Key Features | Heat resistance, chemical resistance, low compression set, low gas permeability |
| Benefits | Extended service life, reduced maintenance, compliance with OEM fluid compatibility requirements |
| Processing Method | Conventional rubber mixing, extrusion, and compression/injection molding |
| Standard Compliance | Meets ASTM D1418 classification FKM; conforms to ISO 1629 designation FPM |
Q1: What distinguishes Tecnoflon FOR 9383 from other FKM elastomers in the Tecnoflon portfolio?
A: Tecnoflon FOR 9383 is a specialty fluoroelastomer formulated with a balanced composition of vinylidene fluoride and hexafluoropropylene, optimized for enhanced resistance to aggressive polar solvents, high-temperature hydrocarbons, and low-permeability applications—particularly where dynamic sealing performance under thermal cycling is critical.
Q2: Is Tecnoflon FOR 9383 suitable for use in fuel systems exposed to modern biofuels and ethanol-blended gasoline?
A: Yes—Tecnoflon FOR 9383 demonstrates excellent compatibility with conventional and next-generation fuel blends, including those containing ethanol, methanol, and fatty acid methyl esters (FAME), maintaining dimensional stability and mechanical integrity over extended exposure at elevated temperatures.
Q3: How does the processing behavior of Tecnoflon FOR 9383 compare to standard FKM grades?
A: Tecnoflon FOR 9383 offers improved scorch safety and extended processing window during mixing and extrusion, with good green strength and calendering characteristics—enabling more consistent compound handling and reduced risk of premature crosslinking in high-shear operations.
Q4: Can Tecnoflon FOR 9383 be compounded with common FKM curatives and fillers?
A: Yes—it is fully compatible with standard bisphenol and diamine cure systems used for FKM, as well as conventional reinforcing fillers like carbon black and non-black alternatives such as precipitated silica, allowing flexible formulation design for target hardness, compression set, and fluid resistance.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
