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High resistance to aggressive automotive fluids including modern low-SAPS engine oils and biofuels.
Excellent high-temperature stability with continuous service capability up to 200 °C.
Superior compression set resistance, ensuring long-term sealing performance under dynamic conditions.
Outstanding chemical resistance to acids, bases, and polar solvents commonly encountered in industrial environments.
Optimized processability for injection molding and compression molding of precision elastomeric components.
Automotive fuel system seals and gaskets (e.g., fuel rail connectors, injector O-rings).
Under-hood engine management components exposed to high thermal and chemical stress.
Industrial fluid handling systems requiring resistance to hydraulic fluids and lubricants.
Aerospace fuel and pneumatic system seals meeting stringent OEM qualification requirements.
Chemical processing equipment seals operating in aggressive media at elevated temperatures.
| Chemical Type | Fluoroelastomer (FKM), vinylidene fluoride–hexafluoropropylene–tetrafluoroethylene terpolymer |
| Product Form | Uncured gum stock in bale form |
| Appearance | Light tan to amber, homogeneous elastomeric solid |
| Primary Applications | Static and dynamic sealing in automotive, aerospace, and industrial fluid systems |
| Key Features | Low compression set, high thermal stability, excellent fluid resistance |
| Benefits | Extended service life, reduced maintenance, compliance with OEM specifications |
| Curing System Compatibility | Standard bisphenol or peroxide curable formulations |
Q1: What distinguishes Tecnoflon FOR 7353 from other FKM elastomers in Solvay’s portfolio?
A: Tecnoflon FOR 7353 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 dynamic sealing environments—particularly where improved low-temperature flexibility and compression set performance are required compared to standard high-F-content FKMs.
Q2: Is Tecnoflon FOR 7353 suitable for static and dynamic sealing applications in automotive fuel systems?
A: Yes—Tecnoflon FOR 7353 is widely specified for both static and dynamic seals exposed to modern fuel blends, including ethanol- and bio-diesel–containing formulations, due to its robust resistance to swelling, extraction, and long-term aging under elevated temperatures typical in fuel rails, injectors, and EV battery cooling loop interfaces.
Q3: How does the processing behavior of Tecnoflon FOR 7353 compare to conventional peroxide-cured FKMs?
A: Tecnoflon FOR 7353 is designed for efficient peroxide curing and exhibits good scorch safety and uniform crosslink density development during standard compression or injection molding cycles. Its rheological profile supports consistent flow into complex mold geometries without excessive die swell or post-cure distortion, making it well-suited for high-precision sealing components.
Q4: Can Tecnoflon FOR 7353 be used in contact with lithium-based battery electrolytes?
A: While not universally approved for direct, long-term immersion in all lithium salt/organic carbonate formulations, Tecnoflon FOR 7353 demonstrates significantly better stability than many alternative elastomers when exposed to common electrolyte vapors and incidental contact—making it a preferred candidate for gasketing and housing seals in battery module enclosures, subject to application-specific validation.
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