High-Transparency FEP Corrugated Tubing: The Ultimate Solution for Flexible Fluid Handling
Our FEP (Fluorinated Ethylene Propylene) corrugated tubing combines the exceptional chemical inertness and temperature resistance of fluoropolymers with superior flexibility. Designed for high-purity applications, its high transparency allows for real-time visual monitoring of fluid flow.
CYLEX supports small-batch customization, offers volume purchasing discounts, ensures rapid delivery, and provides comprehensive after-sales service guarantees.
If you require a quotation or wish to inquire about further details regarding PFA product customization and processing, please feel free to contact us at any time.
Material:
PFA (Perfluoroalkoxy Alkanes)
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Technical Specifications
We offer a wide range of standard and custom sizes to meet your specific engineering requirements.
Diameter Range (DN): 10mm to 80mm (0.39″ to 3.15″)
Length Options: 20mm to 50,000mm (0.78″ to 1,968″)
Standard Wall Thickness: 1.0mm – 1.5mm (0.039″ – 0.059″)
Ultra-Thin Options: Down to 0.5mm (0.02″) for maximum flexibility
Reinforcement: Available with stainless steel wire braiding (mesh cover) for high-pressure environments.
Technical Comparison
Key Benefits & Customization
Custom Solutions: As a non-standard product specialist, we customize diameter, length, and wall thickness to fit your specific equipment.
Versatile Connections: Multiple fitting options including Flanges, Unions, Threaded connectors, Quick-connects, or direct attachment with clamps and wires.
Extreme Resistance: Impervious to almost all industrial chemicals and solvents.
Structural Integrity: Available with reinforcement ribs and external braiding for vacuum or high-pressure applications.
FAQ
Q: Can I order a custom length beyond 50 meters?
A: Yes, we specialize in custom continuous lengths. Please contact our engineering team for specific project needs.
Q: Is FEP tubing suitable for vacuum applications?
A: Standard corrugated tubing may collapse under high vacuum. We recommend our reinforced version with ribs or mesh covers for vacuum stability.
Q: What is the benefit of FEP over PTFE for corrugated pipes?
A: FEP offers much higher transparency and better gas/vapor permeability resistance while maintaining similar chemical resistance.
Comparison of Main Performance of Fluorocarbons
| Properties | ASTM Method & Conditions | POLYFLON PTFE | NEOFLON PFA | NEOFLON FEP | NEOFLON ETFE | NEOFLON PCTFE | NEOFLON PVDF |
|---|---|---|---|---|---|---|---|
| Physical Properties | |||||||
| Specific Gravity | D792 | 2.13-2.22 | 2.12-2.17 | 2.12-2.17 | 1.70-1.86 | 2.10-2.14 | 1.76-1.78 |
| Water Absorption (%) | D570/24h, 1/3"t | < 0.00 | < 0.01 | < 0.00 | < 0.1 | < 0.00 | 0.04 |
| Molding Shrinkage (cm/cm) | - | 0.02-0.05 | 0.04 | 0.03-0.06 | 0.03-0.04 | 0.015-0.020 | 0.014 |
| Contact Angle (°) | Angle with Horizontal | 110 | 115 | 114 | 96 | 84 | 82 |
| Thermal Properties | |||||||
| Thermal Conductivity (W/cm·k) | C177 | 0.25 | - | 0.25 | 0.24 | 0.20-0.22 | 0.13 |
| Linear Expansion Coeff. (1/°C) | D696 / 23-60°C | 10 × 10⁻⁵ | 12 × 10⁻⁵ (+20~+100°C) | (+50~+100°C) 8.3-10.5 × 10⁻⁵ | 5-9 × 10⁻⁵ | 4.5-7.0 × 10⁻⁵ | 4.2 × 10⁻³ |
| Melting Point (°C) | - | 327 | 302-310 | 270 | 260 | 210-212 | 173-175 |
| Melt Viscosity (P) | - | 10¹¹-10¹³ (340-380°C) | 10⁴-10⁵ (380°C) | 4×10⁴-10⁵ (380°C) | 10⁴-10⁵ (300-330°C) | 10⁷ (230°C) | 2×10³-10⁵ (210-270°C) |
| Max Continuous Use Temp (°C) | - | 260 | 260 | 200 | 150 | 120 | 150 |
| Mechanical Properties | |||||||
| Tensile Strength (Mpa) | D638 / 23°C | 20-45 | 27-35 | 19-22 | 40-50 | 31-41 | 39-59 |
| Elongation (%) | D638 / 23°C | 200-450 | 280-400 | 250-330 | 420-460 | 80-250 | 300-450 |
| Compressive Strength (Mpa) | D695 / 1% def, 25°C | 5-6 | 5-6 | 5-6 | 11 | 9-11 | 13-14 |
| Tensile Modulus (Mpa) | D638 / 23°C | 392 | 451 | 343 | 490-784 | 1029-2058 | 784-1960 |
| Flexural Modulus (Mpa) | D790 / 23°C | 490-588 | 647-686 | 539-637 | 882-1372 | 1274-1764 | 1372-1764 |
| Impact Strength (J/m) | D256 / 23°C Cantilever | 160 | Non-break | Non-break | Non-break | 133-144 | 1104 |
| Hardness (Shore) | Durometer | D50-D65 | D60 | D55 | D75 | D80 | D75-D85 |
| Deformation Under Load (%) | D621 / 100°C, 6.8Mpa,24h | 5.0 | 2.4 | 5.0 | 5.4 | 2.6 | 2.4 |
| Deformation Under Load (%) | D621 / 25°C, 13.7Mpa,24h | 7.0 | 2.7 | 3.0 | 2.3 | 0.2 | 0.7 |
| Static Friction Coeff. | vs. Steel | 0.02 | 0.05 | 0.05 | 0.06 | 0.08 | 0.4 |
| Electrical Properties | |||||||
| Dielectric Constant | D150 / 10³ Hz | 2.1 | 2.1 | 2.1 | 2.6 | 2.3-2.7 | 7.72 |
| Dielectric Constant | D150 / 10⁶ Hz | 2.1 | 2.1 | 2.1 | 2.6 | 2.3-2.5 | 6.43 |
| Dielectric Loss Factor | D150 / 10³ Hz | <1×10⁻⁵ | 1×10⁻⁵ | 6×10⁻⁵ | 8×10⁻⁴ | 2.3-2.7×10⁻² | 1.9×10⁻² |
| Dielectric Loss Factor | D150 / 10⁶ Hz | <2×10⁻⁵ | 3×10⁻⁵ | 5×10⁻⁵ | 5×10⁻³ | 1×10⁻² | 0.159 |
| Dielectric Strength (MN/m) | D149 / Short, 3.2mm | 19 | 20 | 20-24 | 16 | 20-24 | 10 |
| Volume Resistivity (Ω·cm) | D257 | >10¹⁸ | >10¹⁸ | >10¹⁸ | >10¹⁸ | >10¹⁶ | 2×10¹⁴ |
| Other Properties | |||||||
| Chemical Resistance | - | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent |
| Weather Resistance | - | Excellent | Excellent | Excellent | Excellent | Excellent | Excellent |
| Flame Retardancy (LOI %) | D2863 / Oxygen Index | >95 | >95 | >95 | 31 | >95 | 43 |
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