High-Performance PTFE Corrugated Tubing & Bellows | Flexible Industrial Solutions
Cylex Plastics provides high-quality PTFE Corrugated Tubing (also known as Convoluted Tubing) engineered through specialized processing techniques. By transforming rigid PTFE into a flexible bellows structure, this tubing overcomes the limitations of traditional straight piping. It serves as a superior, durable alternative to fragile materials like graphite, ceramics, and glass in demanding fluid handling systems.
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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Key Advantages & Applications:
Superior Flexibility: Ideal for connecting misaligned pipelines or balancing displacement and dimensional changes caused by thermal expansion or weather conditions.
Vibration Dampening: Effectively eliminates high-frequency mechanical vibrations, protecting sensitive equipment and tank connections.
Versatile Utility: Widely used for loading and unloading systems in tank trucks, storage containers, and chemical reactors.
Extreme Durability: Maintains the core properties of PTFE—exceptional chemical inertness, high-temperature resistance, and non-aging characteristics.
Technical Specifications:
Size Range A: DN10 – DN36mm (Lengths up to 10 meters).
Size Range B: DN20 – DN200mm (Lengths up to 6 meters).
Wall Thickness: Standard 1.0mm – 2.0mm (Ultra-thin 0.5mm available upon request).
Fatigue Life: Tested for ≥ 10,000 cycles.
Reinforcement Options: Available with Stainless Steel (SS304/316) overbraid for high-pressure applications or integrated reinforcement ribs.
Connection Types: Flange, Union, Threaded, Quick-Coupling, or direct sleeve connection with clamps/wire fixation.
Technical Comparison: PTFE Corrugated vs. Standard Rigid PTFE Tubing
Frequently Asked Questions (FAQ)
Q: Can these tubes handle high-pressure environments?
A: Standard PTFE bellows are designed for low to medium pressure. For high-pressure requirements, we recommend our pressure-rated series equipped with a stainless steel wire braid, which significantly increases burst pressure and vacuum resistance.
Q: Are custom dimensions available for specific industrial needs?
A: Yes. As a custom solutions provider, Cylex Plastics specializes in non-standard specifications. We can customize wall thickness (down to 0.5mm) and provide specific lengths and flange types to match your existing infrastructure.
Q: What industries typically use PTFE corrugated bellows?
A: They are essential in semiconductor manufacturing (for high-purity chemical delivery), pharmaceutical processing, and heavy chemical industries where vibration isolation and corrosion resistance are critical.
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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