PEEK Tubing

IDEX PEEK (Polyether Ether Ketone) tubing delivers high-pressure performance, broad chemical compatibility, and exceptional purity for HPLC, UHPLC, and life science applications. Engineered for demanding analytical workflows, PEEK tubing withstands pressures up to 5,000 PSI and operating temperatures approaching 250°C, making it a reliable alternative to stainless steel in many fluidic systems.

Featuring a smooth internal surface and low gas permeability, PEEK tubing minimizes turbulence and dispersion while helping preserve chromatographic resolution. Its naturally bioinert, non-conductive, and non-reactive properties make it ideal for biological samples and sensitive chemical environments.

Compared to metals and conventional plastics, PEEK offers low extractables and outstanding resistance to acids, bases, and organic solvents. With one of the highest strength-to-weight ratios of any thermoplastic, IDEX PEEK tubing supports continuous high-pressure operation while maintaining dimensional stability across a wide temperature range.

Commonly used in pharmaceutical, semiconductor, and life science laboratories, PEEK tubing has become a preferred solution for fluid transfer applications requiring chemical purity, mechanical durability, and consistent flow performance.

PART NO ID COLOR MAX PRESSURE
PEEK TUBING, 1/16" OD × 5' (1.5 m)
15600.0025" (65 µm)Natural7,000 PSI (483 bar)
15610.004" (0.10 mm)Black7,000 PSI (483 bar)
15350.005" (0.125 mm)Red7,000 PSI (483 bar)
1535XL0.005" (0.125 mm)Red7,000 PSI (483 bar)
15360.007" (0.175 mm)Yellow7,000 PSI (483 bar)
15310.010" (0.25 mm)Natural7,000 PSI (483 bar)
1531B0.010" (0.25 mm)Blue7,000 PSI (483 bar)
1531BXL0.010" (0.25 mm)Blue7,000 PSI (483 bar)
15320.020" (0.50 mm)Orange7,000 PSI (483 bar)
1532XL0.020" (0.50 mm)Orange7,000 PSI (483 bar)
15330.030" (0.75 mm)Green7,000 PSI (483 bar)
1533XL0.030" (0.75 mm)Green7,000 PSI (483 bar)
15380.040" (1.0 mm)Natural5,000 PSI (345 bar)
1538XL0.040" (1.0 mm)Natural5,000 PSI (345 bar)
PEEK TUBING, 1/8" OD × 5' (1.5 m)
15340.062" (1.55 mm)Natural4,000 PSI (276 bar)
15440.080" (2.0 mm)Natural3,000 PSI (207 bar)
*XL designates 100' length.
Typical tolerances: ± 0.001" (25 µm) for 1/16" OD tubing, ± 0.003" (75 µm) for 1/8" OD tubing.

Capillary Tubing

Part No ID Color Max Pressure
CAPILLARY PEEK TUBING, 360 µm OD × 5' (1.5 m)
1574 0.001" (25 µm) Natural 5,000 PSI (345 bar)
1570 0.002" (50 µm) Natural 2,000 PSI (138 bar)
1571 0.004" (100 µm) Red 2,000 PSI (138 bar)
1572 0.006" (150 µm) Yellow 2,000 PSI (138 bar)
CAPILLARY PEEK TUBING, 1/32" OD × 5' (1.5 m)
1576 0.005" (0.125 mm) Red 5,000 PSI (345 bar)
1577 0.007" (0.175 mm) Yellow 5,000 PSI (345 bar)
1581 0.010" (0.25 mm) Blue 5,000 PSI (345 bar)
1568 0.015" (0.40 mm) Natural 5,000 PSI (345 bar)
1569 0.020" (0.50 mm) Orange 5,000 PSI (345 bar)

Key Definitions â–¶
PEEK (Polyether Ether Ketone)
A high-performance engineered polymer known for exceptional chemical resistance, mechanical strength, and thermal stability.
OD (Outer Diameter)
The outside measurement of the tubing, used to ensure compatibility with fittings and compression hardware.
ID (Inner Diameter)
The internal bore of the tubing that determines flow rate, backpressure, and chromatographic dispersion.
Low Extractables
A material characteristic indicating minimal leaching of contaminants into solvents or samples.
Gas Permeability
The tendency of gases to diffuse through tubing walls; PEEK exhibits among the lowest permeability of polymer materials.
Frequently Asked Questions â–¶
What makes PEEK tubing suitable for HPLC and UHPLC systems?
PEEK tubing offers high pressure tolerance (up to 5,000 PSI), excellent chemical resistance, and smooth internal surfaces that reduce turbulence and dispersion, supporting consistent chromatographic performance.
Is PEEK tubing compatible with aggressive solvents?
Yes. PEEK resists a wide range of acids, bases, and organic solvents, making it suitable for demanding analytical and chemical processing environments.
Can PEEK tubing replace stainless steel tubing?
In many applications, yes. PEEK provides a lightweight, bioinert alternative to stainless steel while maintaining high-pressure capability and chemical compatibility, especially in life science workflows.
Does PEEK tubing affect sample integrity?
No. PEEK tubing is non-reactive, non-conductive, and exhibits low extractables, helping preserve sample purity and analytical accuracy.
What temperature range can PEEK tubing withstand?
PEEK tubing remains dimensionally stable at temperatures up to approximately 250°C, making it suitable for elevated-temperature chromatography and process applications.