Excellent Electrical Insulation
Provides stable electrical insulation under high voltage and demanding operating conditions, supporting long-term system reliability.










Sunfilm® Skived PTFE Film Has One Clear Purpose:
Reliable Electrical Insulation, Enhanced Mechanical Protection and Longer Service Life
Provides stable electrical insulation under high voltage and demanding operating conditions, supporting long-term system reliability.
Withstands high electrical stress and helps reduce the risk of dielectric breakdown in critical insulation systems.
The dense, non-porous structure provides excellent dimensional stability, mechanical strength and long-term durability.
Resistant to fuels, lubricants, hydraulic fluids, acids, alkalis and most industrial chemicals.
Excellent abrasion resistance and low friction help protect cables, components and contact surfaces from wear.
Maintains stable mechanical and electrical performance across temperatures from −190°C to +260°C.






| Scope | Typical Value | Unit | Tolerance | Test Standard |
|---|---|---|---|---|
| Material | 100% PTFE | — | — | — |
| Color | Natural | — | — | Visual Inspection |
| Width | 2–100 | mm | ±0.3 | GB/T 6673 |
| Thickness | 0.03–3.0 | mm | ±0.003 (<0.152) ±0.005 (≥0.152) | GB/T 6672 |
| Density | 2.15–2.20 | g/cm³ | ±0.05 | GB/T 1033.1 |
| Tensile Strength | ≥35 | MPa | — | GB/T 1040.3 |
| Elongation at Break | ≥60 | % | — | GB/T 1040.3 |
| Dielectric Constant | 2.1 | — | — | GB/T 1409 / ASTM D150 |
| Dielectric Dissipation Factor (1 MHz) | ≤0.0003* | — | — | GB/T 1409 / ASTM D150 |
| Dielectric Strength | ≥60 | kV/mm | — | GB/T 1408.1 |
| Working Temperature | −190 to +260 | °C | — | GB/T 1409 |
| Chemical Resistance | Excellent | — | — | Inherent PTFE Properties |
| Series | Type | Market | Application | |
|---|---|---|---|---|
| Sunfilm® Skived PTFE Film | Dense Electrical Insulation Film | Global | Electrical insulation, wire and cable protection, semiconductor equipment and industrial protection systems |
| Comparison | Conventional Insulation Film | Sunfilm® Skived PTFE Film |
|---|---|---|
| ✖Performance varies by material | ✔Stable and reliable |
| ✖Limited under high electrical stress | ✔≥60 kV/mm |
| ✖Limited wear resistance | ✔Dense and wear-resistant |
| ✖Limited operating range | ✔−190°C to +260°C |
| ✖May degrade in aggressive media | ✔Excellent resistance |
| ✖May age under demanding conditions | ✔Stable and durable |
Reliable Electrical Insulation, Enhanced Mechanical Protection and Longer Cable Service Life.

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