Details
PEEK TUBES
PEEK Tubes are cylindrical, hollow structures manufactured from Polyether Ether Ketone (PEEK), a high-performance thermoplastic renowned for its exceptional thermal stability, mechanical strength, and chemical resistance. These tubes are engineered for applications requiring lightweight, corrosion-resistant solutions in extreme environments. Produced via extrusion or compression molding, PEEK tubes are ideal for fluid transfer, electrical insulation, and structural components in industries such as aerospace, medical, and oil & gas.
Key Features:
High-Temperature Resistance: Continuous use up to 250°C; short-term exposure to 300°C.
Chemical Resistance: Resists acids (e.g., sulfuric, hydrochloric), bases, hydrocarbons, and steam.
Mechanical Strength: High tensile strength (90–170 MPa) and rigidity, even in thin-walled designs.
Biocompatibility: Medical grades comply with ISO 10993 and USP Class VI for implants and surgical tools.
Flame Retardancy: UL94 V-0 rated (self-extinguishing).
Low Friction: Smooth inner surface reduces fluid drag and particulate buildup.
Radiation Resistance: Withstands gamma and electron beam sterilization.
Types:
PEEK tubes are available in various formulations and specifications to meet different industry needs:
(1) Virgin PEEK Tubes (Unfilled PEEK)
-Pure PEEK resin without additives.
-Best balance of mechanical, chemical, and thermal properties.
-Suitable for medical, food, and general industrial applications.
(2) Glass-Filled PEEK Tubes
-Reinforced with 30% glass fiber for higher strength and stiffness.
-Provides better dimensional stability under load.
-Used in structural and mechanical applications.
(3) Carbon-Filled PEEK Tubes
-30% carbon fiber reinforcement for enhanced strength, wear resistance, and lower coefficient of friction.
-Used in high-load, high-friction applications such as bushings, bearings, and seals.
(4) PTFE-Filled PEEK Tubes
-Blended with PTFE (Teflon) to improve self-lubrication.
-Reduces friction and wear, making it ideal for dynamic applications.
(5) Conductive & ESD-Safe PEEK Tubes
-Contains carbon additives for electrical conductivity.
-Used in electronics, semiconductor, and aerospace industries requiring electrostatic discharge (ESD) protection.
Technical Parameters:
The following table summarizes key technical specifications of some types of PEEK Tubes:
Property | Unfilled PEEK | CFR PEEK | GFR PEEK | Test Standard |
Density (g/cm³) | 1.30–1.32 | 1.40–1.45 | 1.49–1.54 | ASTM D792 |
Tensile Strength (MPa) | 90–100 | 150–170 | 140–160 | ASTM D638 |
Flexural Modulus (GPa) | 3.6–4.0 | 10–12 | 8–10 | ASTM D790 |
Max Operating Pressure (bar) | 50–100 (varies by wall thickness) | 100–150 | 80–120 | ASTM D1599 |
Thermal Conductivity (W/m·K) | 0.25 | 0.5–1.0 | 0.3–0.6 | ASTM C177 |
Water Absorption (%) | 0.1–0.5 (24h immersion) | 0.06–0.1 | 0.1–0.3 | ASTM D570 |
Dielectric Strength (kV/mm) | 20–25 | 18–22 | 19–23 | ASTM D149 |
Product Benefits:
Can Replace Metal Tubing – Offers a high strength-to-weight ratio, reducing equipment weight.
Corrosion & Chemical Resistant – Can handle aggressive chemicals, high temperatures, and pressure.
Long Service Life – High fatigue resistance, impact resistance, and durability.
FDA & Medical Grade Options – Can be used for food processing, biocompatible, and implantable applications.
High-Temperature & Steam Resistance – Ideal for autoclaving and sterilization in medical industries.
Excellent Machinability – Can be CNC-machined, drilled, or cut into custom parts.
Electrical Insulation & ESD-Safe Options – Suitable for semiconductors and high-voltage applications.
Applications:
PEEK tubes are utilized across multiple industries for high-performance applications:
-Medical:
Catheters, endoscope lumens, drug delivery systems.
Sterilizable surgical tubing, dialysis machine components.
-Aerospace:
Fuel and hydraulic lines, electrical conduit, cryogenic fluid transfer.
-Oil & Gas:
Chemical injection tubing, downhole instrumentation, subsea connectors.
-Semiconductor:
Ultra-pure gas and liquid delivery, wafer handling systems.
-Industrial:
High-pressure hydraulic lines, pneumatic systems, bearing sleeves.
-Storage & Handling:
Temperature: Store in a dry, temperature-controlled environment (15–25°C).
Humidity: Maintain relative humidity <50% to prevent moisture absorption.
UV Protection: Shield from direct sunlight to avoid surface degradation.
Packaging: Use protective caps to seal ends; store horizontally on racks to prevent warping.
Shelf Life: Indefinite if stored properly; no chemical degradation.
FAQ
Q1: Can PEEK tubes handle high-pressure fluids?
A: Yes—CFR PEEK tubes withstand up to 150 bar; wall thickness and diameter determine max pressure.
Q2: Are PEEK tubes compatible with steam sterilization?
A: Yes—autoclave at 134°C for 20 minutes without degradation.
Q3: How do PEEK tubes compare to PTFE tubes?
A: PEEK offers 5x higher tensile strength and better thermal stability but lower chemical resistance to strong acids.
Q4: Can PEEK tubes be joined or welded?
A: Yes—use thermal welding, adhesive bonding (with plasma treatment), or compression fittings.
Q5: How to cut PEEK tubes without burrs?
A: Use a sharp blade or laser cutting; deburr with fine-grit sandpaper.
Q6: Can PEEK tubes be machined?
A: Yes, PEEK can be CNC-machined, cut, and drilled for custom applications.
Q7: Could you please compare the properties of PEEK Tubes, PTFE Tubes, Steel Tubes and Nylon Tubes?
A: Yes, please refer to the table below:
Aspect | PEEK Tubes | PTFE Tubes | Stainless Steel Tubes | Nylon Tubes |
Max Temp | 250°C | 260°C | 600°C (softens) | 120°C |
Tensile Strength | 90–170 MPa | 20–35 MPa | 500–700 MPa | 70–90 MPa |
Chemical Resistance | Excellent (excl. conc. sulfuric acid) | Exceptional | Poor (corrodes) | Moderate |
Weight | 1.3–1.5 g/cm³ | 2.1–2.3 g/cm³ | 8.0 g/cm³ | 1.1–1.2 g/cm³ |
Cost | $$$$ | $$$ | $$ | $ |
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