Industrial-Grade PTFE Heat Shrink Tubing
Cylex Plastics’ PTFE Heat Shrink Tubing is engineered for the most demanding industrial applications. Known for its incredibly low coefficient of friction and exceptional thermal stability, this tubing provides a tight, protective skin for components exposed to high heat, corrosive chemicals, and high-voltage electricity.
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 Performance Specifications
Operating Temperature: -80°C to +260°C (-112°F to 500°F)
Rated Voltage: 300V / 600V
Dielectric Strength: Testing voltage at 2500V
Chemical Resistance: Excellent (Chemically inert to almost all solvents)
Compliance: Meets ASTM D638, D792, and D2240 standards.
Technical Physical Properties
Our PTFE heat shrink is tested against rigorous industrial standards to ensure reliability in mission-critical aerospace and semiconductor manufacturing.
Available Sizes (Metric & Imperial)
We offer standard and custom sizes ranging from 0.5mm (0.02″) to 15mm (0.59″).
Note: As this is a non-standard industrial product, we provide custom expansion ratios and wall thicknesses tailored to your specific project requirements.
Applications
Semiconductor: Protection for fluid handling components and sensors.
Aerospace & Military: High-temperature wire harnessing and insulation.
Medical: Bio-compatible covering for surgical instruments (USP Class VI available).
Chemical Processing: Roll covers and protective lining for corrosive environments.
Frequently Asked Questions (FAQ)
Q: What is the shrink temperature for PTFE tubing?
A: PTFE requires a high shrink temperature, typically around 327°C (621°F). A high-temperature heat gun or oven is recommended for uniform recovery.
Q: Can I use this for electrical insulation in high-voltage environments?
A: Yes, with a testing voltage of 2500V and excellent volume resistivity, it is an industry standard for high-performance electrical insulation.
| Specification | Before Contraction | After Contraction | ||
|---|---|---|---|---|
| Inside Diameter | Thickness | Inside Diameter | Thickness | |
| Φ0.5 (0.020 in) | 0.7 mm ± 0.2 (0.028 in ± 0.008) | 0.1 mm ± 0.05 (0.004 in ± 0.002) | ≤0.3 mm (≤0.012 in) | 0.15 mm ± 0.05 (0.006 in ± 0.002) |
| Φ1.0 (0.039 in) | 1.0 mm ± 0.2 (0.039 in ± 0.008) | 0.1 mm ± 0.05 (0.004 in ± 0.002) | ≤0.5 mm (≤0.020 in) | 0.15 mm ± 0.05 (0.006 in ± 0.002) |
| Φ1.5 (0.059 in) | 1.5 mm ± 0.2 (0.059 in ± 0.008) | 0.1 mm ± 0.05 (0.004 in ± 0.002) | ≤0.8 mm (≤0.031 in) | 0.15 mm ± 0.05 (0.006 in ± 0.002) |
| Φ2.0 (0.079 in) | 2.0 mm ± 0.2 (0.079 in ± 0.008) | 0.1 mm ± 0.05 (0.004 in ± 0.002) | ≤1.0 mm (≤0.039 in) | 0.15 mm ± 0.05 (0.006 in ± 0.002) |
| Φ3.0 (0.118 in) | 3.0 mm ± 0.2 (0.118 in ± 0.008) | 0.1 mm ± 0.05 (0.004 in ± 0.002) | ≤1.5 mm (≤0.059 in) | 0.2 mm ± 0.05 (0.008 in ± 0.002) |
| Φ4.0 (0.157 in) | 3.5 mm ± 0.2 (0.138 in ± 0.008) | 0.15 mm ± 0.05 (0.006 in ± 0.002) | ≤2.0 mm (≤0.079 in) | 0.2 mm ± 0.05 (0.008 in ± 0.002) |
| Φ5.0 (0.197 in) | 5.0 mm ± 0.3 (0.197 in ± 0.012) | 0.15 mm ± 0.05 (0.006 in ± 0.002) | ≤2.5 mm (≤0.098 in) | 0.2 mm ± 0.05 (0.008 in ± 0.002) |
| Φ6.0 (0.236 in) | 6.0 mm ± 0.3 (0.236 in ± 0.012) | 0.15 mm ± 0.05 (0.006 in ± 0.002) | ≤3.0 mm (≤0.118 in) | 0.25 mm ± 0.05 (0.010 in ± 0.002) |
| Φ7.0 (0.276 in) | 7.0 mm ± 0.3 (0.276 in ± 0.012) | 0.15 mm ± 0.05 (0.006 in ± 0.002) | ≤3.5 mm (≤0.138 in) | 0.25 mm ± 0.05 (0.010 in ± 0.002) |
| Φ8.0 (0.315 in) | 8.0 mm ± 0.3 (0.315 in ± 0.012) | 0.15 mm ± 0.05 (0.006 in ± 0.002) | ≤4.0 mm (≤0.157 in) | 0.25 mm ± 0.05 (0.010 in ± 0.002) |
| Φ9.0 (0.354 in) | 9.0 mm ± 0.3 (0.354 in ± 0.012) | 0.15 mm ± 0.05 (0.006 in ± 0.002) | ≤4.5 mm (≤0.177 in) | 0.25 mm ± 0.05 (0.010 in ± 0.002) |
| Φ10.0 (0.394 in) | 10.0 mm ± 0.3 (0.394 in ± 0.012) | 0.15 mm ± 0.05 (0.006 in ± 0.002) | ≤5.0 mm (≤0.197 in) | 0.25 mm ± 0.05 (0.010 in ± 0.002) |
| Φ12.0 (0.472 in) | 12.0 mm ± 0.5 (0.472 in ± 0.020) | 0.2 mm ± 0.05 (0.008 in ± 0.002) | ≤6.0 mm (≤0.236 in) | 0.3 mm ± 0.05 (0.012 in ± 0.002) |
| Φ15.0 (0.591 in) | 15.0 mm ± 0.5 (0.591 in ± 0.020) | 0.2 mm ± 0.05 (0.008 in ± 0.002) | ≤7.5 mm (≤0.295 in) | 0.4 mm ± 0.05 (0.016 in ± 0.002) |
| Specification | Before Contraction | Wall Thickness after Full Shrinkage | Inner Diameter after Shrinkage | |
|---|---|---|---|---|
| Inside Diameter | Thin | Thick | Inside Diameter | |
| Φ1.5 (0.059 in) | 1.5 mm ± 0.2 (0.059 in ± 0.008) | 0.05 mm (0.002 in) | 0.1 mm (0.004 in) | 0.4 mm ± 0.1 (0.016 in ± 0.004) |
| Φ2.0 (0.079 in) | 2.0 mm ± 0.2 (0.079 in ± 0.008) | 0.05 mm (0.002 in) | 0.12 mm (0.005 in) | 0.5 mm ± 0.2 (0.020 in ± 0.008) |
| Φ3.0 (0.118 in) | 3.0 mm ± 0.2 (0.118 in ± 0.008) | 0.05 mm (0.002 in) | 0.12 mm (0.005 in) | 0.7 mm ± 0.2 (0.028 in ± 0.008) |
| Φ4.0 (0.157 in) | 4.0 mm ± 0.2 (0.157 in ± 0.008) | 0.05 mm (0.002 in) | 0.12 mm (0.005 in) | 1.2 mm ± 0.2 (0.047 in ± 0.008) |
| Φ5.0 (0.197 in) | 5.0 mm ± 0.2 (0.197 in ± 0.008) | 0.05 mm (0.002 in) | 0.12 mm (0.005 in) | 1.5 mm ± 0.2 (0.059 in ± 0.008) |
| Φ6.0 (0.236 in) | 6.0 mm ± 0.2 (0.236 in ± 0.008) | 0.1 mm (0.004 in) | 0.12 mm (0.005 in) | 2.5 mm ± 0.2 (0.098 in ± 0.008) |
| Φ7.0 (0.276 in) | 7.0 mm ± 0.2 (0.276 in ± 0.008) | 0.1 mm (0.004 in) | 0.12 mm (0.005 in) | 2.8 mm ± 0.2 (0.110 in ± 0.008) |
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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