Polyimide Tubing

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Polyimide-based tubes offer outstanding properties that far exceed those of conventional thermoplastics. Polyimide tubes are manufactured using paste extrusion.
Polyimide tubing is manufactured using dip coating. The wall thickness is determined by the number of dips. Due to the nature of the process, it is not possible to manufacture continuous tubing, only lengths of tubing (random lengths).

 

Art.-Nr.
Properties

 

  • Temperature resistance: Continuous temperature 240°C, short-term up to 400°C.
  • Resistant to radiation, solvents, acids, oil and ultra-low temperatures (cryogens).
  • Possibility of lubricating coating inside and outside.
  • Medical Grade and Industrial Grade.
  • Diameter up to 50.8 mm possible
Technical data
Dielectric strength 134 kV/mm minimum
Temperature resistance at 20,000 h 240°C
Short term 400°C minimum
Tensile strength 138 N/mm2
Ultimate tensile strength @ 23°C 230 N/mm2
Hoop stress 76 N/mm2Minimum
Compressive strength (Hoop stress x wall thickness) / outer radius
Chemical resistance Excellent against most solvents and solutions
Radiation resistance 3.0 x 109 Gamma Dose Gy
Thermal conductivity coefficient 35.0 x 10-5Cal/sec/cm2/°C/cm
Coefficient of thermal expansion 4.0 x 10-5/°C
Elongation at break 50% nominal
Dielectric constant 3.4
Melting point None
Density at room temperature 1.42 g/cm3

 

Further technical information

 

Small diameters:

  • From 0.127 mm to 2.3 mm with the thinnest wall thicknesses.
  • Cutting in short lengths from 0.5 mm and tolerance of ±0.025 mm.

Large diameters:

  • Medical grade up to 6.35 mm
  • Industrial grade up to 50.8 mm
  • Lengths up to 1.3 m.
  • Tight tolerances.
  • Thin wall thicknesses from 0.0127 mm to 0.508 mm
  • Low concentricity rates.

Colors
Natural (amber), black, dark red, purple, green.

Delivery sizes

  • Lengths up to 1.32 m long.
  • Cut to lengths (for small diameters with a tolerance of ±0.025 mm).