American Durafilm® recently acquired the manufacturing assets of Concentric MicroTubing Inc. (CMTi) located in Cornelius, North Carolina. This strategic acquisition will enable American Durafilm® to add both large and small diameter seamless polyimide tubing and custom assemblies to its existing product offerings of polyimide tubing and high performance coatings and films including; Teflon®, Xylan®, Dykor®, Halar®, Emralon®, Everlube®, Tefzel®, Kapton®, and PEEK®.
American Durafilm now boasts the widest size range of medical polyimide tubing than any other company. Polyimide tubing can also be fabricated in our state of the art, ISO 7/Class 10000 clean room http://americandurafilm.com/cleanroom.cfm.
Uncoated Tubing
A tough aromatic polyimide film exhibiting an excellent balance of physical, chemical, and electrical properties over a wide temperature range from 0° Kelvin (-459.66°F) to unusually high temperatures (752°F).
Chemically, Durafilm® PI Tubing is a modified Type 1 polyimide solution based on 4,4' oxydianiline, benzophenone tetracarboxylic dianhydride and pyromellitic dianhydride.
Coated Tubing
Proprietary formulations to produce tubing with specific surface resistivity values to bleed static charges and Fluoropolymer topcoats of PTFE, FEP and PFA for superior release at high temperatures (425°F - 550°F).
Wire and Material Coating
American Durafilm has the ability to coat various materials with polyimide and our polyimide/PTFE composites.
Primary Size Range
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Standard Tolerances
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Material Features
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Medical Applications
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Electrical Applications
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| Physical Property | |
|---|---|
| Thermal Rating @ 20,000 Hours | 240 °C Minimum |
| Thermal Endurance | 400 °C Minimum |
| Melting Point | None |
| Chemical Resistance | Excellent |
| Dielectric Strength | 3400 Volts/mil Minimum |
Dielectric Constant |
3.4 |
| Elongation @ Break | 50% Nominal |
| Tensile Strength | 20,000 PSI |
| Ultimate Tensile Strength @ 23°C | 33,500 PSI |
| Hoop Stress | 11,000 PSI Minimum |
| Burst Strength | (Hoop Stress x Wall Thickness)/ODRadius |
| Coefficient of Thermal Conductivity | 35.0 X 10-5Cal/sec/cm2/°C/cm |
| Coefficient of Thermal Expansion | 4.0 X 10-5/°C |
| Density @ Room Temp | 1.42 g/cc |
Standard sizes range from 0.005"(0.127mm) to 3.00" (76.2mm). Smaller and larger custom sizes are available, please contact our customer service team with your needs at 1-800-234-8885.