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High resistance to aggressive automotive fluids including modern low-viscosity engine oils, ATF, and transmission fluids.
Excellent high-temperature performance with continuous service capability up to 200 °C.
Outstanding compression set resistance, ensuring long-term sealing integrity under dynamic and static conditions.
Good processability for high-volume production via injection molding and compression molding.
Low extractables profile, meeting stringent requirements for fuel and lubricant system components.
Automotive fuel system seals (e.g., fuel pump O-rings, injector gaskets).
Engine valve stem seals and turbocharger hose couplings.
Transmission system components including solenoid valve seals and clutch piston rings.
Industrial hydraulic systems requiring compatibility with HFD-U and phosphate ester fluids.
| Chemical Type | Fluoroelastomer (FKM), vinylidene fluoride–hexafluoropropylene–tetrafluoroethylene terpolymer |
| Product Form | Uncured gum stock in bale form |
| Appearance | Light tan to amber colored, homogeneous elastomeric solid |
| Primary Applications | High-performance static and dynamic seals in automotive powertrain and fluid handling systems |
| Key Features | Fluid resistance, thermal stability, low compression set, moldability |
| Benefits | Extended service life, reduced leakage risk, compliance with OEM fluid compatibility standards |
| Curing System | Diamine-cured (requires post-cure for optimal properties) |
Q1: What distinguishes Tecnoflon T 636/L from other FKM elastomers?
A: Tecnoflon T 636/L is a low-temperature-cure, peroxide-curable fluoroelastomer designed for enhanced processability in high-precision molding applications. Its optimized molecular structure provides improved scorch safety and extended compound shelf life compared to conventional bisphenol-cured FKMs, while maintaining strong resistance to heat, oils, and aggressive chemicals.
Q2: Is Tecnoflon T 636/L suitable for static or dynamic sealing applications?
A: Yes — it is widely used in both static and moderately dynamic sealing environments, particularly where consistent compression set resistance and dimensional stability under thermal cycling are required. Its balanced rheology supports fine-feature replication in complex geometries, making it well-suited for automotive fuel systems, aerospace O-rings, and industrial valve seals.
Q3: How does Tecnoflon T 636/L perform in contact with polar solvents and low-surface-tension fluids?
A: As a high-fluorine-content FKM, it offers superior resistance to polar solvents—including ketones, esters, and chlorinated hydrocarbons—compared to standard fluorocarbon elastomers. It also demonstrates notably reduced fluid uptake and swelling when exposed to low-surface-tension media such as refrigerants and hydraulic fluids.
Q4: Can Tecnoflon T 636/L be compounded with standard FKM processing aids and fillers?
A: Yes — it is compatible with conventional FKM compounding ingredients including carbon black, calcium carbonate, and silica-based reinforcing fillers. However, due to its peroxide cure system, it requires careful selection of co-agents and avoidance of sulfur-donating additives that may interfere with crosslinking efficiency.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
