FEP 4608
Everflon™ High-Strength Fluoropolymer Series
FEP 4608
High melt strength meets extreme stress-crack resistance.
Engineered for high-integrity film extrusion, chemical processing linings, and heavy-duty industrial tubing.
7.0 g/10 min
Melt Flow Index (ASTM D2116)
> 100 kV/mm
Dielectric Strength (0.25 mm)
2.03
Relative Permittivity @ 1 GHz
205°C / 400°F
Continuous Service Temp.
Structural Integrity & Melt Strength
Engineered for crack-resistant films and heavy-duty chemical conduits.
Melt Strength & Film Extrusion
Superior Bubble & Extrusion Stability
MFI 6.0–8.0 g/10min Film Grade: Features higher molecular weight and enhanced melt strength, providing outstanding draw-down stability for blown and cast films, sheet extrusion, and seamless thick-wall anti-corrosion linings without sagging or thickness variation.
Flex Fatigue Endurance
Exceptional MIT Flex Life & ESCR
Extreme Crack Resistance: Delivers benchmark-tier environmental stress-crack resistance (ESCR) and outstanding MIT flex endurance. Prevents pinholing and micro-cracking in dynamic diaphragm pumps, flexible chemical hoses, and flex-rigid circuit substrates.
Electrical Precision
Lossless Dielectric Insulation
Ultra-Low Permittivity (2.03 @ 1 GHz): Guarantees zero-distortion high-frequency signal propagation and dependable electrical isolation (>100 kV/mm dielectric strength) for aerospace instrumentation, military airframe wiring, and high-voltage power leads.
Thermal & Chemical Shield
UL 94 V-0 Flame Retardancy & Total Inertness
Total Chemical Immunity: Limiting Oxygen Index (LOI) >95% with self-extinguishing safety. Defies ultra-aggressive oxidizers, harsh acids, caustics, and organic solvents continuously at service temperatures up to 205 °C (400 °F).
Mission-Critical Applications
Engineered for industrial films, chemical containment, and severe wiring.
APPLICATION 01
High-Performance Films & Composite Release
Premium grade for cast and blown FEP films, solar panel protective layers, composite vacuum bagging release sheets, and heat-sealable barrier laminates requiring pinhole-free purity.
APPLICATION 02
Heavy-Wall Chemical Tubing & Pipe Linings
Extrudes thick-wall anti-corrosion fluid lines, chemical transfer hoses, heat exchanger tubing, and rotomolded pipe liners exposed to extreme chemical mechanical fatigue.
APPLICATION 03
Aerospace Wire & Downhole Instrumentation
Heavy-duty, crack-resistant wire insulation for high-temperature aerospace airframe cabling, oil & gas downhole sensor lines, and nuclear instrumentation conduits requiring extreme cut-through resistance.
Datasheet & Engineering Metrics
Technical Specifications at a Glance
| Property | Test Method | Typical Value | Assessment & Engineering Notes |
|---|---|---|---|
| Melt Flow Index (MFI) | ASTM D2116 | 6.0 – 8.0 g/10 min | High melt strength & superior draw-down stability for films/tubing |
| Specific Gravity | ASTM D792 | 2.15 | Dense, ultra-high purity fluoropolymer matrix |
| Tensile Strength | ASTM D638 | 25 MPa | Exceptional mechanical strength and cut-through durability |
| Elongation at Break | ASTM D638 | 340 % | Outstanding plasticity and flexural elongation |
| Izod Impact Strength (23 °C) | ASTM D256 | No Break | Maximum impact resistance and mechanical shock dissipation |
| Dielectric Strength (0.25 mm) | IEC 243 / ASTM D149 | > 100 kV/mm | High-voltage insulation armor and electrical surge protection |
| Relative Permittivity (1 GHz) | IEC 250 / ASTM D150 | 2.03 | Low dielectric constant and lossless high-frequency signal propagation |
| Limiting Oxygen Index (LOI) | ISO 4589 / ASTM D2863 | > 95 % | UL 94 V-0 top-tier fire safety rating |
| Continuous Service Temp. | --- | 205 °C / 400 °F | Engineered for continuous thermal and environmental extremes |
Pellet Purity
Supplied in consistent 3 mm (0.12 in) dust-free translucent pellets ensuring uniform extruder feed rate and stable melt pressure.
Processing Versatility
Compatible with blown/cast film extrusion, tubing extrusion, compression, and transfer molding. Corrosion-resistant nickel alloys (Hastelloy, Inconel) recommended up to 400°C.
Packaging Integrity
Delivered in heavy-duty 25-kg (55.1-lb) drums sealed with double-layer moisture-proof polyethylene liners to safeguard cleanroom purity.
Quality Standards & Environmental Stewardship
Certified Quality. Uncompromising Environmental Standards.
✓ Flame & Fire Safety
UL 94 V-0 Certified
Everflon™ FEP 4608 achieves the highest UL 94 V-0 flammability classification with an LOI over 95%. It fully complies with strict U.S. National Electrical Code (NEC) plenum fire standards and aerospace flame propagation requirements.
✓ Global Chemical Compliance
RoHS 3 & REACH SVHC
Manufactured without restricted hazardous chemicals. Fully compliant with EU RoHS Directive 2011/65/EU (and 2015/863) and certified free of REACH Substances of Very High Concern (SVHC) for seamless international export.
✓ High Purity & PFOA Free
FDA 21 CFR & Zero-PFOS/PFOA
Synthesized via clean polymer technology containing zero non-compliant PFOA/PFOS surfactants. Meets FDA 21 CFR 177.1550 criteria for chemical tubing, food processing, and pharmaceutical fluid handling systems.
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