The Gold Standard in Polyimide Film — Trusted Across 45 Years of Extreme Environments
From the circuits aboard space cameras to the insulation inside your EV's battery pack, Kapton® is the material engineers reach for when failure isn't an option. Its unmatched combination of thermal, electrical, chemical and mechanical performance means it survives where other films fail — from deep cryogenic conditions to +400 °C continuous service.
At Goodfellow, we hold an exhaustive DuPont Kapton® range in stock, with custom cutting, metallization, and micromachining available on request.
Not sure which grade is right for your application?
Key Properties of Kapton® Polyimide
High-Temperature Resistance
Most polymer films fail long before they reach the extremes your application demands. Kapton® maintains its electrical and mechanical properties across a temperature range no other film can match — from −269°C in deep cryogenic environments to +400°C in continuous high-heat industrial service. One material, any environment.
Mechanical Stability
Where other films stretch, creep or deform, Kapton® holds its shape — even under sustained mechanical load and repeated flexing. Its robust tensile strength and resistance to wear mean you can rely on consistent dimensional accuracy throughout the working life of your component, however demanding the conditions.
Excellent Insulator
With a dielectric strength of up to 303 kV/mm and a consistently low dielectric constant, Kapton® delivers electrical insulation that doesn't degrade under heat, age, or repeated stress cycles. When insulation failure isn't an option, it's the film that electrical engineers specify by name.
Chemical Resistance
Kapton® is chemically inert to a wide range of aggressive substances — including common industrial solvents, strong acids and alkalis — making it suitable for corrosive processing environments and demanding cleaning cycles. Its performance doesn't erode with exposure the way many alternative films do.
Versatile Processing Methods
Kapton® is designed to be worked with. It responds cleanly to etching, coating, laminating, metallizing, bonding and laser micromachining — giving engineers the flexibility to tailor it precisely to their application requirements. Whatever form your design calls for, the material can be adapted to meet it.
Low Moisture Absorption
Kapton® absorbs minimal moisture, so its electrical and mechanical properties stay consistent in humid environments where other films would swell, soften or lose dielectric reliability. For applications where ambient conditions are variable or unpredictable, that stability isn't a luxury — it's a hard requirement.
Kapton® Polyimide Grade Overview
All Kapton® grades share a common polyimide backbone with a continuous service range of −269 °C to +400 °C, UL 94 V-0 flammability rating, and CAS 60842-76-4.
Grades differ in surface treatment, filler system, or coating to optimize performance for specific applications.
| Grade | Thermal | Electrical | Mechanical | Key Differentiator | Typical Applications | ||||
|---|---|---|---|---|---|---|---|---|---|
| Temp. Range | Thermal Cond. (W/m·K) |
Diel. Strength (kV/mm) |
Volume Res. (Ω·cm) |
Surface Treatment | Tensile Str. (MPa) |
Elongation (%) | Differentiator | Applications | |
| Kapton® HNGeneral purposeView product | −269 to +400 °C | 0.20 | 303 | 1.5×1017 | Untreated | 231 | 72 | Industry BaselineBalanced all-round properties; ASTM D-5213 reference grade | Aerospace wiring, cryogenics, microelectronics, flexible heaters, nuclear instrumentation |
| Kapton® FPCFlex circuitView product | −269 to +400 °C | 0.20 | 303 | 1.5×1017 | Double-sided adhesion treatment | 231 | 72 | Low ShrinkageIPC-4202/1 compliant; superior lay-flat and dimensional stability for fine-line copper | Flexible PCBs, rigid-flex circuits, high-density interconnects, wearable electronics |
| Kapton® HPP-STHigh stabilityView product | −269 to +400 °C | 0.20 | 303 | 1.5×1017 | Enhanced adhesion surface | 231 | 72 | Ultra-Low MoistureReduced moisture absorption & CTE vs. HN; superior adhesion for lamination | Rigid-flex PCBs, satellite sensor encapsulation, space-qualified instrumentation |
| Kapton® MTThermal managementView product | −269 to +400 °C | 0.46 | ~216 | >1016 | Ceramic-filled (untreated) | ~138 | ~80 | 3× Thermal Cond.0.46 W/m·K — highest conductivity in the range; higher modulus, ceramic-filled | EV battery thermal interfaces, power electronics, LED substrates, motor slot insulation |
| Kapton® BMatte blackView product | −269 to +400 °C | 0.12 | ~110 | 1018 | Carbon black pigmented | ~241 | 65 | Light BlockingOpaque matte black finish; homogeneous pigmentation; higher tensile strength than HN | Optical baffles, shielded flex circuits, sensor insulation requiring light exclusion |
| Kapton® CRCRadiation-resistantView product | −269 to +400 °C | 0.12 | 256 | >1016 | Untreated | 228 | 65 | Radiation HardenedEnhanced structural integrity under high-dose radiation; maintains cryogenic performance | Nuclear instrumentation, particle detector windows, fusion reactors, high-energy physics |
| Kapton® 200RS100Static dissipativeView product | −270 to +200 °C | 0.12 | >100 | — | Carbon coating (100 Ω/sq) | >100 | >40 | EMI / ESD ShieldConductive carbon coating; surface resistivity 100 Ω/sq; max +200 °C continuous (+325 °C short-term, O&sub2;-free) | EMI shielding films, ESD-sensitive flex circuits, cleanroom packaging, antistatic insulation |
All grades comply with EU Directives 2015/863/EU (RoHS 3) and 2000/53/EC (ELV). Dielectric constant 3.4 @ 1 MHz; density 1.42 g/cm3 (all grades). Values are indicative — consult individual datasheets for specification-critical applications. †200RS100 density 1.46 g/cm³. †200RS100 density 1.46 g/cm³.
Alternatives to Kapton® Polyimide
Goodfellow also supplies the following polyimide-family materials where unbranded PI film or specialist solid forms are required. These are not Kapton® grades but share the same base polymer chemistry.
| Material | Thermal | Electrical | Mechanical | Key Differentiator | Typical Applications | |||
|---|---|---|---|---|---|---|---|---|
| Material / Form | Temp. Range | Thermal Cond. (W/m·K) |
Diel. Strength (kV/mm) |
Volume Res. (Ω·cm) |
Tensile Str. (MPa) |
Elongation (%) | Differentiator | Applications |
| Polyimide FilmUnbranded PIView product | −270 to +320 °C | 0.10–0.35 | 22 | 1018 | 70–150 | 8–70 | Cost-EffectiveBroad thickness range (0.025–6.35 mm); additive-free options; no brand premium | General insulation, laboratory masking, prototyping, thermal barriers, general research |
| Cirlex® CLAll-PI laminateView product | −269 to +351 °C | 0.17 | ~110 | — | ~224 | 65 | Adhesiveless LaminateNo adhesive layer; ultra-low outgassing; ideal for vacuum and cleanroom environments | Cleanroom flex PCBs, vacuum instrumentation, spacecraft assemblies, ultra-high purity circuits |
| Vespel® SP1Solid PI rod/partView product | −270 to +300 °C | 0.35 | 22 | 1016–1017 | 86 | 7.5 | Precision Solid PartNot a film — machinable solid; very low CTE & creep; magnetically neutral | Bushings, washers, seal rings, standoffs, semiconductor fixtures, cryogenic structural parts |
Kapton® Polyimide Applications
Aerospace
Kapton® polyimide film plays a crucial role in aerospace applications, such as circuits in cameras for space missions. Its ability to withstand extreme temperatures and harsh environments makes it ideal for space exploration.
Electronics
Kapton®'s excellent electrical insulation properties and high-temperature resistance make it indispensable in electronic devices, with it widely used in applications like chip scale packaging, flexible displays and sensors.
Energy
Used in the next generation of photovoltaic cells, Kapton® polyimide film’s thermal stability and durability enables it to function effectively in solar panels, contributing to the generation of clean and sustainable energy.
Automotive
Automotive systems requiring high-temperature resistance and electrical insulation use Kapton® polyimide film. For example, it is chosen for wire and cable tapes, motor slot liners and as insulation for transformers and capacitors.
Medical
This high-performance polyimide film is found in medical applications requiring its biocompatibility, flexibility, and resistance to sterilization. Kapton® plays a crucial role in medical devices, electronic sensors and implants.
Industrial
Kapton® polyimide film is widely used in industrial applications that require high-temperature insulation, such as coil insulation, tubing, and pressure-sensitive tapes. Its reliability and durability ensure consistent performance in demanding industrial environments.
Need Kapton® Cut, Drilled or Patterned to Micron-Scale Precision?
Through our specialist microfabrication division, we provide high-precision Kapton® micromachining services using advanced laser technologies to cut, drill and pattern polyimide films with clean edges and minimal heat-affected zones.
Our process expertise enables micron-scale feature control in Kapton® films, tubing, and shapes — ideal for precision components, masks, insulation parts and medical device applications where dimensional accuracy and material integrity are critical.
Popular Kapton® Products
- Kapton® 200RS100 Polyimide Coil Kapton® 200RS100 polyimide coil integrates a resistive layer with polyimide insulation for flexible heaters, thermal control, and laboratory and aerospace electronics.each
Starting at $344.00
In stockDiscounts applied for volume purchasesKapton® 200RS100 polyimide coil integrates a resistive layer with polyimide insulation for flexible heaters, thermal control, and laboratory and aerospace electronics. - Kapton® 200RS100 Polyimide Disk Kapton® 200RS100 polyimide disk provides controlled surface resistivity with thermal and chemical stability for flexible heaters, resistive circuits, and precision instrumentation.each
Starting at $148.00
In stockDiscounts applied for volume purchasesKapton® 200RS100 polyimide disk provides controlled surface resistivity with thermal and chemical stability for flexible heaters, resistive circuits, and precision instrumentation. - Kapton® 200RS100 Polyimide Film Kapton® 200RS100 polyimide film offers stable surface resistivity, EMI control, and thermal endurance for aerospace electronics, sensors, and flexible circuit prototyping.each
Starting at $267.00
In stockDiscounts applied for volume purchasesKapton® 200RS100 polyimide film offers stable surface resistivity, EMI control, and thermal endurance for aerospace electronics, sensors, and flexible circuit prototyping. - Kapton® B Polyimide Coil Kapton® B polyimide coil provides high dielectric strength, thermal stability, and chemical resistance for sensors, flexible circuits, and harsh‑environment instrumentation.each
Starting at $383.00
In stockDiscounts applied for volume purchasesKapton® B polyimide coil provides high dielectric strength, thermal stability, and chemical resistance for sensors, flexible circuits, and harsh‑environment instrumentation. - Kapton® B Polyimide Disk Kapton® B polyimide disk delivers dimensional stability and dielectric reliability for masking, spacers, and substrates in aerospace, electronics, and vacuum systems.each
Starting at $148.00
In stockDiscounts applied for volume purchasesKapton® B polyimide disk delivers dimensional stability and dielectric reliability for masking, spacers, and substrates in aerospace, electronics, and vacuum systems. - Kapton® B Polyimide Film Kapton® B polyimide film offers consistent insulation, solvent resistance, and thermal endurance up to 400 °C for flexible circuits, sensors, and aerospace wiring.each
Starting at $291.00
In stockDiscounts applied for volume purchasesKapton® B polyimide film offers consistent insulation, solvent resistance, and thermal endurance up to 400 °C for flexible circuits, sensors, and aerospace wiring. - Kapton® CRC Polyimide Coil Kapton® CRC polyimide coil provides localized thermal control and insulation for printed heaters, sensors, and laboratory microelectronic systems.each
Starting at $420.00
In stockDiscounts applied for volume purchasesKapton® CRC polyimide coil provides localized thermal control and insulation for printed heaters, sensors, and laboratory microelectronic systems. - Kapton® CRC Polyimide Disk Kapton® CRC polyimide disk delivers crack resistance, dielectric stability, and durability for mechanically stressed insulation in aerospace and precision electronics.each
Starting at $148.00
In stockDiscounts applied for volume purchasesKapton® CRC polyimide disk delivers crack resistance, dielectric stability, and durability for mechanically stressed insulation in aerospace and precision electronics. - Kapton® CRC Polyimide Film Kapton® CRC polyimide film provides radiation resistance, thermal stability, and dielectric reliability for space electronics, sensors, and extreme‑environment circuits.each
Starting at $291.00
In stockDiscounts applied for volume purchasesKapton® CRC polyimide film provides radiation resistance, thermal stability, and dielectric reliability for space electronics, sensors, and extreme‑environment circuits. - Kapton® FPC Polyimide Coil Kapton® FPC polyimide coil supports flexible printed circuits with low outgassing, dimensional stability, and thermal endurance for sensors and compact electronics.each
Starting at $383.00
In stockDiscounts applied for volume purchasesKapton® FPC polyimide coil supports flexible printed circuits with low outgassing, dimensional stability, and thermal endurance for sensors and compact electronics. - Kapton® FPC Polyimide Disk Kapton® FPC polyimide disk delivers bend resistance, dielectric strength, and thermal stability for foldable electronics, avionics, and precision interconnects.each
Starting at $148.00
In stockDiscounts applied for volume purchasesKapton® FPC polyimide disk delivers bend resistance, dielectric strength, and thermal stability for foldable electronics, avionics, and precision interconnects. - Kapton® FPC Polyimide Film Kapton® FPC polyimide film provides high flexibility, dielectric reliability, and temperature resistance for multilayer flex PCBs and wearable electronics.each
Starting at $291.00
In stockDiscounts applied for volume purchasesKapton® FPC polyimide film provides high flexibility, dielectric reliability, and temperature resistance for multilayer flex PCBs and wearable electronics. - Kapton® HN Polyimide Coil Kapton® HN polyimide coil offers high dielectric strength, low outgassing, and stability to 400 °C for vacuum systems, coils, and flexible electronics.each
Starting at $383.00
In stockDiscounts applied for volume purchasesKapton® HN polyimide coil offers high dielectric strength, low outgassing, and stability to 400 °C for vacuum systems, coils, and flexible electronics. - Kapton® HN Polyimide Disk Kapton® HN polyimide disk provides radiation‑resistant insulation and dimensional stability for spacers, gaskets, and substrates in aerospace and instrumentation.each
Starting at $148.00
In stockDiscounts applied for volume purchasesKapton® HN polyimide disk provides radiation‑resistant insulation and dimensional stability for spacers, gaskets, and substrates in aerospace and instrumentation. - Kapton® HN Polyimide Film Kapton® HN polyimide film is a benchmark high‑temperature dielectric for aerospace wiring, cryogenics, microelectronics, and high‑energy physics systems.each
Starting at $291.00
In stockDiscounts applied for volume purchasesKapton® HN polyimide film is a benchmark high‑temperature dielectric for aerospace wiring, cryogenics, microelectronics, and high‑energy physics systems. - Kapton® HN Polyimide Coil Metallized with Aluminum (30 nm) Kapton® HN polyimide coil metallized with aluminum provides EMI shielding, reflectivity, and thermal stability for flexible circuits, spacecraft insulation, and sensors.each
Starting at $630.00
In stockDiscounts applied for volume purchasesKapton® HN polyimide coil metallized with aluminum provides EMI shielding, reflectivity, and thermal stability for flexible circuits, spacecraft insulation, and sensors. - Kapton® HN Polyimide Disk Metallized with Aluminum (30 nm) Kapton® HN polyimide disk metallized with aluminum combines dielectric strength with surface conductivity for optical components and EMI shielding assemblies.each
Starting at $451.00
In stockDiscounts applied for volume purchasesKapton® HN polyimide disk metallized with aluminum combines dielectric strength with surface conductivity for optical components and EMI shielding assemblies. - Kapton® HN Polyimide Film Metallized with Aluminum (30 nm) Kapton® HN polyimide film metallized with aluminum delivers controlled conductivity, EMI shielding, and thermal endurance for aerospace electronics and sensors.each
Starting at $451.00
In stockDiscounts applied for volume purchasesKapton® HN polyimide film metallized with aluminum delivers controlled conductivity, EMI shielding, and thermal endurance for aerospace electronics and sensors. - Kapton® HPP-ST Polyimide Coil Kapton® HPP‑ST polyimide coil provides enhanced surface adhesion, thermal stability, and dielectric performance for flexible circuits and aerospace instrumentation.each
Starting at $570.00
In stockDiscounts applied for volume purchasesKapton® HPP‑ST polyimide coil provides enhanced surface adhesion, thermal stability, and dielectric performance for flexible circuits and aerospace instrumentation. - Kapton® HPP-ST Polyimide Disk Kapton® HPP‑ST polyimide disk offers adhesion‑optimized polyimide with high thermal and dielectric stability for optoelectronics and vacuum systems.each
Starting at $148.00
In stockDiscounts applied for volume purchasesKapton® HPP‑ST polyimide disk offers adhesion‑optimized polyimide with high thermal and dielectric stability for optoelectronics and vacuum systems. - Kapton® HPP-ST Polyimide Film Kapton® HPP‑ST polyimide film delivers low moisture uptake, dimensional stability, and dielectric reliability for aerospace sensors and high‑density electronics.each
Starting at $291.00
In stockDiscounts applied for volume purchasesKapton® HPP‑ST polyimide film delivers low moisture uptake, dimensional stability, and dielectric reliability for aerospace sensors and high‑density electronics. - Kapton® MT Polyimide Coil Kapton® MT polyimide coil provides enhanced thermal conductivity with electrical insulation for flexible heaters, sensors, and thermal management research.each
Starting at $419.00
In stockDiscounts applied for volume purchasesKapton® MT polyimide coil provides enhanced thermal conductivity with electrical insulation for flexible heaters, sensors, and thermal management research. - Kapton® MT Polyimide Disk Kapton® MT polyimide disk delivers thermally conductive yet electrically insulating performance for heat spreaders, cryogenic systems, and power electronics.each
Starting at $148.00
In stockDiscounts applied for volume purchasesKapton® MT polyimide disk delivers thermally conductive yet electrically insulating performance for heat spreaders, cryogenic systems, and power electronics. - Kapton® MT Polyimide Film Kapton® MT polyimide film offers elevated thermal conductivity with dielectric stability for compact power electronics and thermal interface layers.each
Starting at $291.00
In stockDiscounts applied for volume purchasesKapton® MT polyimide film offers elevated thermal conductivity with dielectric stability for compact power electronics and thermal interface layers.
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