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High fluorine content (~68–70 wt%) delivering exceptional resistance to aggressive chemicals, including acids, bases, and polar solvents.
Excellent high-temperature performance with continuous service capability up to 230 °C and short-term exposure up to 300 °C.
Outstanding compression set resistance, maintaining sealing integrity under prolonged thermal and mechanical stress.
Low gas permeability, particularly effective for critical fluid containment in demanding industrial environments.
Good processability in standard rubber processing equipment, supporting efficient extrusion, molding, and calendering operations.
Aerospace fuel system seals and O-rings exposed to jet fuels, hydraulic fluids, and extreme temperature cycling.
Automotive powertrain components, including turbocharger hoses, valve stem seals, and transmission gaskets.
Chemical processing equipment seals, diaphragms, and linings handling corrosive media such as chlorinated solvents and strong oxidizers.
Semiconductor manufacturing tooling seals requiring ultra-low particle generation and resistance to plasma etchants.
Oil & gas downhole elastomeric parts, including packer elements and valve seats operating in H₂S- and CO₂-rich sour service environments.
| Chemical Type | Fluoroelastomer (FKM), vinylidene fluoride–hexafluoropropylene–tetrafluoroethylene terpolymer |
| Product Form | Uncured gum stock in bale form |
| Appearance | Light tan to pale amber, homogeneous solid rubber |
| Primary Applications | Static and dynamic seals, gaskets, diaphragms, and molded parts for high-performance industrial use |
| Key Features | High fluorine content, excellent heat and chemical resistance, low compression set |
| Benefits | Extended service life in aggressive media, reduced maintenance frequency, reliable sealing at elevated temperatures |
| Processing Compatibility | Compatible with conventional sulfur-cure and peroxide-cure systems; optimized for high-temperature vulcanization |
Q1: What distinguishes Tecnoflon T 636 from other FKM elastomers in terms of processing and cure behavior?
A: Tecnoflon T 636 is a low-viscosity, peroxide-curable fluoroelastomer designed for improved processability—particularly in high-shear mixing and extrusion—while maintaining excellent thermal and chemical resistance. Its formulation enables faster scorch safety and more consistent crosslink density compared to conventional bisphenol-cured FKMs.
Q2: Is Tecnoflon T 636 suitable for applications requiring resistance to aggressive automotive fluids and high-temperature exposure?
A: Yes—Tecnoflon T 636 delivers outstanding resistance to modern engine oils, transmission fluids, brake fluids (including DOT 4 and DOT 5.1), and hot air up to 200 °C continuous service. It is widely specified in under-hood sealing components where long-term stability in dynamic, high-stress environments is critical.
Q3: Can Tecnoflon T 636 be compounded with standard FKM fillers and processing aids?
A: Yes—it is fully compatible with common FKM compounding ingredients such as carbon black, calcium carbonate, and silica, as well as standard peroxide initiators and co-agents. However, optimal dispersion and cure balance require adjustment of mixing sequence and temperature profile to match its lower Mooney viscosity.
Q4: How does Tecnoflon T 636 perform in static versus dynamic sealing applications?
A: It excels in both regimes: its low compression set and high resilience support reliable static sealing over extended periods, while its fatigue resistance and retention of mechanical properties at elevated temperatures make it well-suited for dynamic seals such as shaft lip seals and valve stem seals in demanding industrial and transportation systems.
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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
