High fluorine content (~68–70 wt%) delivering exceptional resistance to aggressive chemicals and hydrocarbons.
Excellent high-temperature performance with continuous service capability up to 230 °C in air.
Outstanding compression set resistance, ensuring long-term sealing integrity under dynamic and static conditions.
Good low-temperature flexibility down to –15 °C, supporting reliable performance across broad thermal ranges.
Optimized processability for conventional rubber processing equipment, including extrusion and compression molding.
Aerospace fuel system seals and diaphragms exposed to jet fuels and synthetic lubricants.
Automotive turbocharger hoses and gaskets operating under high-temperature exhaust environments.
Oil & gas downhole elastomeric components requiring resistance to sour gas (H₂S), CO₂, and aromatic hydrocarbons.
Chemical processing pump seals and valve seats handling aggressive solvents and acidic media.
Industrial hydraulic systems where compatibility with phosphate ester-based fire-resistant fluids is critical.
| Chemical Type | Fluoroelastomer (FKM), vinylidene fluoride–hexafluoropropylene–tetrafluoroethylene terpolymer |
| Product Form | Uncured gum stock in bale form |
| Appearance | Light tan to pale yellow, homogeneous sheet or slab |
| Primary Applications | Static and dynamic seals, gaskets, O-rings, diaphragms, and molded parts |
| Key Features | High fluorine content, excellent heat aging resistance, low compression set |
| Benefits | Extended service life in harsh chemical/thermal environments; reduced maintenance and downtime |
| Curing System Compatibility | Standard diamine or bisphenol curatives (e.g., MgO/CaO + bisphenol AF) |
| Density (ASTM D297) | ~1.92–1.96 g/cm³ |
Q1: What distinguishes Tecnoflon P 457 from other FKM elastomers in terms of processing and cure behavior?
A: Tecnoflon P 457 is a peroxide-curable, low-viscosity FKM grade designed for excellent processability—particularly in high-shear mixing and extrusion. Its lower Mooney viscosity enables easier dispersion and improved filler incorporation compared to standard high-Mooney FKMs, while maintaining robust thermal and chemical resistance after curing.
Q2: Is Tecnoflon P 457 suitable for applications requiring resistance to aggressive automotive fluids and elevated temperatures?
A: Yes—Tecnoflon P 457 delivers outstanding resistance to modern low-viscosity engine oils, transmission fluids, and biofuel blends, along with long-term stability at continuous service temperatures up to 200 °C. Its fluorine content and molecular structure provide superior retention of mechanical properties under dynamic thermal-chemical stress typical in powertrain and emission control systems.
Q3: Can Tecnoflon P 457 be compounded with standard FKM accelerators and fillers?
A: Tecnoflon P 457 is formulated for peroxide curing and is not compatible with conventional diamine or bisphenol-based cure systems. It responds well to common peroxide initiators (e.g., DCP or DBPH) and standard reinforcing fillers like thermally stable carbon black or precipitated silica. Compound formulation should avoid acidic co-agents that may interfere with peroxide efficiency.
Q4: How does Tecnoflon P 457 perform in dynamic sealing applications involving repeated compression set exposure?
A: Due to its optimized polymer architecture and low compression set characteristics—especially when properly cured—Tecnoflon P 457 maintains reliable sealing force over extended cycles in demanding environments such as turbocharger hoses, fuel injector O-rings, and valve stem seals where resilience and recovery are critical.
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E-mail: wangxingqiang@ericwchem.com
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