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High fluorine content (~68–70 wt%) delivering exceptional resistance to aggressive chemicals and hydrocarbons.
Optimized for low-temperature flexibility with a glass transition temperature (Tg) of approximately –15 °C.
Excellent compression set resistance, maintaining sealing integrity under prolonged thermal and mechanical stress.
Good processability in standard rubber processing equipment, including extrusion and injection molding.
Outstanding resistance to automotive fluids, including modern low-SAPS engine oils and biofuels.
Dynamic and static seals in high-performance automotive powertrain systems.
Fuel system components exposed to ethanol-blended gasoline and biodiesel blends.
O-rings and gaskets in oil & gas downhole tools operating at elevated temperatures and pressures.
Sealing solutions for aerospace hydraulic systems requiring wide temperature range stability.
Valve stem seals and diaphragms in chemical processing equipment handling corrosive media.
| Chemical Type | Fluoroelastomer (FKM), vinylidene fluoride–hexafluoropropylene–tetrafluoroethylene terpolymer |
| Product Form | Uncured gum stock in bale form (typically 2–5 kg) |
| Appearance | Light tan to beige homogeneous elastomeric solid |
| Primary Applications | High-performance static and dynamic seals in automotive, aerospace, and industrial fluid systems |
| Key Features | High fluorine content, low-temperature flexibility, low compression set, excellent chemical resistance |
| Benefits | Extended service life in harsh environments, reduced maintenance frequency, compliance with OEM fluid compatibility requirements |
| Processing Recommendation | Compatible with conventional sulfur-based and peroxide cure systems; optimized for two-stage curing |
| Standard Compliance | Meets ASTM D1418, ISO 1629, and SAE J200 classifications for FKM elastomers |
Q1: What is the primary chemical resistance profile of Tecnoflon FOR 9385F?
A: Tecnoflon FOR 9385F is a fluoroelastomer specifically formulated for enhanced resistance to aggressive hydrocarbons, polar solvents, and high-temperature fluids—including amines, esters, ketones, and chlorinated hydrocarbons—making it suitable for demanding sealing applications in oil & gas, chemical processing, and advanced powertrain systems.
Q2: How does FOR 9385F differ from standard FKM grades in terms of low-temperature flexibility?
A: FOR 9385F features a tailored monomer composition that improves low-temperature performance relative to conventional peroxide-cured FKM elastomers, enabling reliable sealing functionality down to approximately –20 °C without requiring specialty cure systems or plasticizers.
Q3: Is Tecnoflon FOR 9385F compatible with common FKM processing equipment and compounding practices?
A: Yes—FOR 9385F is designed for straightforward integration into standard FKM processing workflows, including internal mixing, extrusion, and compression/injection molding. It exhibits good scorch safety and processability without requiring significant retooling or specialized curing protocols.
Q4: What types of curing systems are recommended for optimal performance?
A: FOR 9385F is optimized for peroxide-based cure systems, which deliver superior thermal stability and compression set resistance. Bisphenol-cured formulations are not recommended, as they may compromise the grade’s intended high-temperature and chemical resistance balance.
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E-mail: wangxingqiang@ericwchem.com
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