Extruded Flexible PTFE Teflon Tube
Model:KXT PT
Kaxite KXT PT is a flexible extruded PTFE tube made from virgin polytetrafluoroethylene resin by a controlled ram extrusion process. Diameter 3–25 mm, wall thickness 0.7–2.0 mm, temperature −250 to +260 °C, tensile strength 2,500–4,000 PSI, specific gravity 2.13–2.24, dielectric constant 2.1. Full pH-range chemical resistance with a non-contaminating, non-stick bore. Used for chemical and gas transfer, paint and adhesive delivery, automotive and appliance fluid lines, electrical insulation and laboratory service. Custom diameters, wall thicknesses, colours and coil lengths available. Factory-direct price, quote within 24 hours.
Model KXT PT · Extruded PTFE Tube
Extruded Flexible PTFE Teflon Tube — 3–25 mm ID, 0.7–2 mm Wall, −250 to +260 °C, Factory Direct
Kaxite KXT PT is a flexible extruded PTFE tube made from virgin polytetrafluoroethylene resin by a controlled ram extrusion process. Careful selection of resin type, particle size, extrusion temperature and pressure produces tubing with a smooth bore, uniform wall thickness and dimensions that stay stable through thermal cycling and chemical exposure. It has the highest continuous working temperature of any fluoropolymer tubing available today at +260 °C, a tensile strength of 2,500–4,000 PSI, and full chemical inertness across the entire pH range. Used for chemical transfer, natural gas and mineral oil delivery, toxic gas monitoring lines, paint and varnish delivery, high-purity fluid handling, electrical insulation and laboratory service. Available from 3 mm to 25 mm diameter in natural, semi-transparent or custom colours, with cut-to-length and coil options. Factory-direct price, quote within 24 hours.
Diameter 3 – 25 mm ID · OD on request
Wall Thickness 0.7 – 2.0 mm Standard range
Temp. Range −250 / +260 °C Continuous service
Tensile Strength 2500–4000 PSI Per ASTM D638
Specific Gravity 2.13 – 2.24 Virgin PTFE
01
Why Extruded PTFE Tube Instead of Other Fluoropolymer Tubing
Material ChoiceExtruded PTFE tube is produced by pushing pre-formed PTFE resin through a die at controlled temperature and pressure. The process gives the tube a continuous, void-free wall and a smooth inner bore that stays chemically inert and non-contaminating. Among fluoropolymer tubes, PTFE holds the highest continuous service temperature at +260 °C. FEP and PFA, which are melt-processable, offer lower temperature limits and lower chemical resistance. Only PTFE combines full pH-range inertness, non-stick surface, self-lubrication, and the widest temperature window — from −250 °C to +260 °C.
Core Advantages
- Highest working temperature of any fluoropolymer tube — up to +260 °C continuous
- High strength against internal pressure — 2,500–4,000 PSI tensile strength
- Full pH-range chemical inertness — acids, alkalis, solvents, oxidizers
- Smooth inner surface reduces pressure drop and prevents fluid retention
- Non-contaminating — no plasticizers, no leaching, no taste or odour transfer
Processing Advantages
- Abrasion resistance for slurry and paint delivery lines
- Low coefficient of friction for easy routing and assembly
- Flexible enough for tight bends without kinking
- Excellent dielectric strength for electrical insulation service
- Dimensionally stable — no ovality, no sag, no creep in service
02
KXT PT Full Specification — Dimensions and Physical Properties
Data Sheet| Parameter | Value | Notes |
|---|---|---|
| Material | Virgin PTFE | Polytetrafluoroethylene resin, non-recycled |
| Diameter range | 3 – 25 mm | Custom ID / OD dimensions on request |
| Wall thickness | 0.7 – 2.0 mm | Selected by pressure and flexibility requirement |
| Temperature range | −250 to +260 °C | Continuous service, no embrittlement at low end |
| Tensile strength | 2,500 – 4,000 PSI | Per ASTM D638 at 23 °C |
| Specific gravity | 2.13 – 2.24 | Virgin grade, ASTM D792 |
| Water absorption | < 0.00 % | ASTM D570, 24 hours |
| Contact angle | 110° | Angle to level — highly non-wetting surface |
| Mold shrinkage | 0.02 – 0.05 cm/cm | Dimensional stability after processing |
| Colour options | Natural white, semi-transparent, custom | Custom pigments available on request |
| Supply form | Coil, straight length, cut-to-size | Coil diameter, length and packaging made to order |
| Customization | Diameter, wall, colour, length, OEM packaging | Send drawing or application conditions |
| Quotation basis | Diameter, wall thickness, length, quantity, colour, destination port | Reply within 24 hours |
03
Thermal, Mechanical and Electrical Properties
Property Matrix| Property | Value | Test Standard |
|---|---|---|
| Thermal conductivity | 6 × 10⁻⁴ cal/sec/cm²/°C/cm | ASTM C177 |
| Thermal expansion coefficient | 10 × 10⁻⁵ (1/°C) | ASTM D696 (23–60 °C) |
| Melting point | 327 °C | DSC |
| Melt viscosity | 10¹¹ – 10¹³ poise at 340–380 °C | — |
| Max continuous temperature | 260 °C / 500 °F | Long-term |
| Tensile strength | 140 – 350 kgf/cm² | ASTM D638 at 23 °C |
| Elongation at break | 200 – 400 % | ASTM D638 at 23 °C |
| Compression strength | 50 – 60 kgf/cm² | ASTM D695 at 1 % deformation, 25 °C |
| Tensile modulus | 4,000 kgf/cm² | ASTM D638 at 23 °C |
| Flexural modulus | 5,000 – 6,000 kgf/cm² | ASTM D790 at 23 °C |
| Impact strength (Izod) | 3 ft·lb/in | ASTM D256 at 23 °C |
| Hardness | D50 – D65 Shore | Durometer |
| Deformation under load | 5 % at 100 °C / 70 kgf/cm² / 24 h | ASTM D621 |
| Deformation under load | 7 % at 25 °C / 140 kgf/cm² / 24 h | ASTM D621 |
| Static friction coefficient | 0.02 (coated on steel surface) | — |
| Dielectric constant | 2.1 | ASTM D150 at 10³ and 10⁶ Hz |
| Dielectric dissipation factor | < 1 × 10⁻⁵ | ASTM D150 at 10³ Hz |
| Dielectric breakdown strength | 480 V/mil | ASTM D149, short time, 1/8 in |
| Volume resistivity | > 10¹⁸ ohm·cm | ASTM D257 |
| Chemical resistance | Excellent — full pH range | Acids, alkalis, solvents, oxidizers |
| Weather ability | Excellent | UV and ozone resistant |
| Combustibility (LOI) | > 95 % | ASTM D2863 oxygen concentration index |
04
Typical Applications of Extruded PTFE Tube
Application Map
App. 01
Chemical & Gas Transfer
Pressure tubing for chemical transfer, toxic gas monitoring, natural gas and mineral oil delivery in aggressive service.
App. 02
Paint, Varnish & Adhesive Lines
Non-stick bore keeps pigments and coatings flowing without residue build-up or blocked lines.
App. 03
Automotive & Appliance
Fuel vapour lines, brake fluid transfer, sensor lines, appliance fluid handling where chemical resistance matters.
App. 04
Electrical Insulation
Sleeving for high-temperature wire insulation and protective cover, dielectric constant 2.1 and breakdown strength 480 V/mil.
App. 05
High Temperature Applications
Continuous service at +260 °C — the highest temperature limit of any fluoropolymer tube on the market.
App. 06
Laboratory & Analytical
Sample transfer, reagent delivery and HPLC lines where non-contaminating and chemically inert tubing is required.
For related PTFE components, see PTFE Rods or the wider range of PTFE Products. For other tube constructions, compare with our Molded PTFE Tube or browse the full PTFE Tube range. For sheet stock used in similar chemical service, see PTFE Sheet.
05
How to Order — What to Send Us
Order BriefProduct Data
- Inner diameter or outer diameter required
- Wall thickness (0.7 – 2.0 mm standard, custom available)
- Total length — straight lengths or coil length
- Colour — natural white, semi-transparent or custom
- Quantity in metres or kilograms
Application Data
- Working medium — chemical composition and concentration
- Operating temperature and pressure
- Flow rate or tubing line length
- End fitting or connection type
- Destination port for FOB or CIF quotation
Send these details and Kaxite will confirm the recommended wall thickness for your pressure and flexibility requirement, then reply within 24 hours with a factory-direct quotation, lead time and packing details.
06
Frequently Asked Questions
Buyer Q&AWhat is an extruded flexible PTFE Teflon tube?
It is a flexible tube made from virgin PTFE resin by a ram extrusion process. The PTFE is pushed through a die at controlled temperature and pressure, producing a continuous tube with a smooth bore and stable dimensions. It is used for chemical transfer, gas monitoring, paint delivery, electrical insulation and any application requiring full chemical inertness and a temperature range from −250 °C to +260 °C.
What diameters and wall thicknesses are available?
Standard diameters run from 3 mm to 25 mm with wall thickness from 0.7 mm to 2.0 mm. Custom inner diameter, outer diameter and wall thickness can be produced on request. Send your required ID, OD, wall and total length and we will confirm the exact extrusion dimensions.
What is the maximum working temperature?
The maximum continuous working temperature is +260 °C — the highest of any fluoropolymer tube. At the low end, the tube remains flexible down to −250 °C without embrittlement, making it suitable for both cryogenic and high-temperature service.
What pressure can the tube handle?
Pressure capability depends on diameter and wall thickness. Tensile strength is 2,500–4,000 PSI (140–350 kgf/cm²) per ASTM D638. For pressure tubing, a thicker wall (1.5–2.0 mm) is usually specified. Send your working pressure and flow rate and Kaxite will confirm the recommended wall thickness.
Is the tube chemically resistant to all media?
The tube is chemically inert against virtually all industrial media across the full pH range — acids, alkalis, solvents, oxidizers, hydrocarbons and plating solutions. The only exceptions are molten alkali metals and elemental fluorine at elevated temperature. Send your medium for a compatibility confirmation.
Can Kaxite supply custom colours, coils and OEM packing?
Yes. Natural white and semi-transparent are standard. Custom pigmented colours, custom coil diameters, custom cut lengths and OEM packaging with your own labelling are all available on qualified orders.
Do you provide material certificates and test data?
Yes. Every shipment includes a material data sheet covering grade, dimensions, tensile strength, elongation, temperature range, dielectric constant and volume resistivity, plus batch traceability and a dimensional inspection record.
How do I request a quotation?
Send your diameter, wall thickness, total length, colour, quantity, working medium, temperature, pressure and destination port. Kaxite replies within 24 hours with a factory-direct quotation, lead time and packing details.
Need a factory price for extruded flexible PTFE Teflon tube? Send your diameter, wall thickness, length and medium — Kaxite replies within 24 hours with a factory-direct quotation and free sample offer for qualified buyers.
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Contact Info
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Address
No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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