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Excellent resistance to high temperatures up to 230 °C in continuous service.
Superior chemical resistance to aggressive automotive fluids, including modern low-SAPS engine oils and biofuels.
Outstanding compression set resistance, ensuring long-term sealing performance under dynamic and static conditions.
Good processability on standard rubber processing equipment, including extrusion and injection molding.
Low gas permeability, ideal for critical sealing applications requiring tight containment.
High-performance O-rings and seals for turbocharger systems in internal combustion engines.
Fuel system components, including injector seals and fuel rail gaskets in gasoline direct injection (GDI) and diesel common rail systems.
Valve stem seals and crankshaft rear main seals in advanced powertrain applications.
Sealing solutions for electric vehicle battery cooling circuits exposed to glycol-based heat transfer fluids.
Static and dynamic seals in industrial hydraulic systems operating with HFD-U and phosphate ester-based fire-resistant fluids.
| Chemical Type | Fluoroelastomer (FKM), vinylidene fluoride–hexafluoropropylene–tetrafluoroethylene terpolymer |
| Product Form | Uncured gum stock in bale form |
| Appearance | Light tan to amber, homogeneous solid sheet |
| Primary Applications | High-temperature static and dynamic seals in automotive, aerospace, and industrial fluid systems |
| Key Features | High fluorine content (~68 wt%), excellent thermal stability, low compression set |
| Benefits | Extended service life in harsh environments, reduced maintenance frequency, compliance with OEM specifications |
| Curing System Compatibility | Amine-cured (requires post-cure for optimal properties) |
| Density (ASTM D297) | 1.82–1.86 g/cm³ |
Q1: What is the primary chemical resistance profile of Tecnoflon P 457?
A: Tecnoflon P 457 offers excellent resistance to a broad range of aggressive chemicals, including aliphatic and aromatic hydrocarbons, mineral oils, synthetic lubricants, and many polar solvents. It also maintains good stability in contact with hot air and steam, making it suitable for demanding sealing applications in oil and gas, automotive, and chemical processing environments.
Q2: Is Tecnoflon P 457 suitable for high-temperature dynamic sealing applications?
A: Yes — Tecnoflon P 457 is formulated to deliver reliable performance under continuous thermal exposure up to approximately 200 °C, with short-term tolerance extending higher. Its low compression set and retained elasticity at elevated temperatures support robust functionality in dynamic seals, such as valve stem seals and turbocharger gaskets, where both thermal and mechanical stress are present.
Q3: How does Tecnoflon P 457 compare to standard FKM grades in terms of processability?
A: Tecnoflon P 457 is designed with enhanced scorch safety and improved extrudability compared to many conventional peroxide-cured FKM compounds. It exhibits favorable green strength and dimensional stability during pre-vulcanization handling, supporting efficient high-speed extrusion and complex mold filling without excessive die swell or premature cure.
Q4: Can Tecnoflon P 457 be used in applications requiring FDA-compliant elastomers?
A: Tecnoflon P 457 is not inherently FDA-compliant in its base form. However, when compounded with FDA-listed ingredients and processed under appropriate controls, formulations based on this polymer may meet requirements for indirect food contact applications — subject to full formulation review and validation by the compounder and end-user.
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E-mail: wangxingqiang@ericwchem.com
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