Kaxite PTFE Tubes are extruded from 100% virgin PTFE resin, producing a smooth-bore tubing with an internally uniform surface, high chemical resistance and excellent dielectric strength. The tubing is flexible enough to bend around tight radii, does not stick to the fluids it carries, and does not contaminate the media it contacts.
Standard outer diameters range from 3 mm to 28 mm, with wall thicknesses from 0.75 mm to 2 mm. Service temperature range is −200 °C to +250 °C. The tubing is used for chemical transfer, electrical insulation sleeving, pneumatic lines and non-stick fluid handling across chemical, pharmaceutical, food and electronics industries.
PTFE tubing solves a specific set of problems that metal, rubber and standard plastic tubing cannot. It is specified when the tubing itself must not react with the fluid, must not contaminate it, and must stay flexible across a wide temperature range.
Transfer lines for aggressive acids, bases and oxidizers in chemical processing plants.
Insulating sleeves for conductors, thermocouples and high-frequency cables.
Fluid handling where the media must not be contaminated by the tubing.
Low-friction pneumatic and hydraulic lines where metal tubing would corrode or gall.
Ultra-clean fluid transfer and dielectric sleeves in high-purity equipment.
Sample transfer, chromatography and analytical instrument tubing.
| Property | ASTM test | Value |
|---|---|---|
| Specific gravity | D792 | 2.15 |
| Water absorption (%) | D570 / 24 hrs, 1/3" t | < 0.00 |
| Mold shrinkage (cm/cm) | — | 0.02 – 0.05 |
| Contact angle (degree) | Angle to level | 110 |
| Property | ASTM test | Value |
|---|---|---|
| Thermal conductivity (cal/sec/cm², °C/cm) | C177 | 6 × 10⁻⁴ |
| Coefficient of linear thermal expansion (1/°C) | D696 / 23–60 °C | 10 × 10⁻⁵ |
| Melting point (°C) | — | 327 |
| Melt viscosity (poise) | 340–380 °C | 10¹¹ – 10¹³ |
| Maximum continuous service temperature (°C / °F) | — | 260 / 500 |
| Property | ASTM test | Value |
|---|---|---|
| Tensile strength (kgf/cm²) | D638 / 23 °C | 140 – 350 |
| Elongation (%) | D638 / 23 °C | 200 – 400 |
| Compression strength (kgf/cm²) | D695 / 1% deformation, 25 °C | 50 – 60 |
| Tensile modulus (kgf/cm²) | D638 / 23 °C | 4,000 |
| Flexural modulus (kgf/cm²) | D790 / 23 °C | 5,000 – 6,000 |
| Impact strength (ft-lb/in) | D256 / 23 °C, Izod | 3 |
| Hardness (Shore) | Durometer | D50 – D65 |
| Deformation under load (%) | D621 / 100 °C, 70 kgf/cm², 24 hrs | 5 |
| Deformation under load (%) | D621 / 25 °C, 140 kgf/cm², 24 hrs | 7 |
| Static friction coefficient | Coated steel surface | 0.02 |
| Property | ASTM test | Value |
|---|---|---|
| Dielectric constant | D150 / 10³ Hz | 2.1 |
| Dielectric constant | D150 / 10⁶ Hz | 2.1 |
| Dielectric dissipation factor | D150 / 10³ Hz | < 1 × 10⁻⁵ |
| Dielectric breakdown strength (V/mil) | D149 / short time, 1/8 in | 480 |
| Volume resistivity (ohm·cm) | D257 | > 10¹⁸ |
| Chemical resistance | — | Excellent |
| Weather ability | — | Excellent |
| Combustibility (%) | D2863 / oxygen concentration index | > 95 |
To quote accurately, please provide the following information with your inquiry:
Send outer diameter, wall thickness and length — our engineers will reply with pricing and lead time within 24 hours.
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