PEEK (Polyetheretherketone) is a high-performance thermoplastic polymer recognized as one of the most advanced insulating materials available. PEEK round wire combines exceptional thermal stability, chemical resistance, and electrical insulation properties, making it suitable for applications in new energy vehicles, aerospace, industrial motors, and high-voltage systems.

CHINGCUNG offers PEEK insulated round wires with a continuous operating temperature rating of 240°C (up to 260°C intermittent). The insulation is applied via a single-layer extrusion process, delivering superior concentricity, higher partial discharge inception voltage (PDIV), and greater reliability compared to traditional multi-layer enameled wires.

CHINGCUNG PEEK insulated round wires are identified using the following model format:

PKW-Gx/240-D

PKW = PEEK Wire (Round)  |  Gx = Film Grade (G1–G4, with G4 being the thickest)  |  240 = Thermal Class  |  D = Conductor Diameter (mm)

Custom diameters and insulation thicknesses are available upon request.

PEEK round wires are available in four insulation thickness grades. Grade 1 is the thinnest; Grade 4 is the thickest. Higher grades provide increased dielectric strength and partial discharge inception voltage (PDIV) for demanding high-voltage applications.

Typical values. Actual performance may vary. PDIV values can reach above 2300Vp with optimized extrusion processes.

·         High-temperature performance – Continuous operation up to 260°C, with a melting point of ~343°C.

·         Excellent abrasion resistance – Suitable for dynamic applications and repeated bending.

·         Superior chemical resistance – Resistant to ATF oil, lubricants, impregnating paints, and epoxy resins.

·         High PDIV and dielectric strength – Enables reliable operation in high-voltage systems.

·         Low dielectric constant – εr ~3.2, reduces capacitive coupling and improves power density.

·         Flame retardant and self-extinguishing – UL94 V-0 rated, low smoke emission.

·         Radiation resistance – Stable insulation properties even at high γ-ray doses.

·         Environmentally friendly – Halogen-free and RoHS compliant; single-layer extrusion process uses up to 5× less energy than traditional enamel coating.

·         Thermal Class: 240°C (IEC 60172)

·         Flammability Rating: UL94 V-0

·         Environmental Compliance: RoHS, REACH

·         Quality System: Manufactured in ISO 9001 certified facilities

All products are tested for dielectric strength, adhesion, flexibility, and thermal performance before shipment.

·         Material expertise – Over 10 years of experience in high-performance insulated wire manufacturing

·         Flexible production – Custom diameters, thickness grades, and packaging options

·         Quality assurance – Strict process control and 100% testing on key parameters

·         Competitive pricing – Efficient single-layer extrusion process reduces production costs

·         Global supply – Serving customers in North America, Europe, and Asia

 Need a PEEK round wire sample or technical datasheet?

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