PTFE Insulation Film |Electrical Grade PTFE Film

PTFE Insulation Film is a high-performance fluoropolymer film specifically engineered for demanding electrical and electronic applications. Manufactured from virgin polytetrafluoroethylene resin, this electrical-grade film provides outstanding dielectric strength, ultra-low dielectric loss, and long-term thermal stability.

Designed for high-voltage and high-frequency environments, PTFE insulation film ensures reliable electrical performance under extreme temperatures and harsh operating conditions. It is widely used in aerospace wiring systems, high-frequency electronics, cable insulation, and precision electrical components.

Key Electrical Performance Advantages

1. Exceptional Dielectric Strength

PTFE insulation film provides superior electrical breakdown resistance:

• Dielectric strength: ≥ 200 kV/mm

• Volume resistivity: > 10¹⁸ Ω·cm

• Surface resistivity: > 10¹⁶ Ω

This ensures safe operation in high-voltage systems and critical insulation structures.

2. Ultra-Low Dielectric Constant & Loss

• Dielectric constant (1 MHz): ~2.0

• Extremely low dissipation factor

• Stable dielectric performance across wide frequency ranges

Its low dielectric constant makes it ideal for RF systems, Microwave applications, High-speed signal transmission and 5G communication components

3. Wide Operating Temperature Range

Continuous operating temperature: -200°C to +260°C

Melting point: 327°C

PTFE maintains electrical and mechanical stability even under prolonged thermal stress, making it suitable for aerospace, automotive, and industrial high-temperature environments.

4. Chemical & Environmental Resistance

Electrical systems operating in harsh environments benefit from PTFE:

Resistance to acids and solvents

Moisture resistance (water absorption < 0.01%)

UV and ozone resistance

Long-term aging stability

This ensures insulation reliability in outdoor and chemically aggressive conditions.

5. Mechanical Stability & Flexibility

• Tensile strength: 20 – 30 MPa

• Elongation at break: 200 – 400%

• Shore D hardness: 50 – 55

The film maintains flexibility for wrapping, layering, and precision insulation applications.

Note: Values are typical data and may vary depending on thickness and processing conditions.

Standard Specifications

• Thickness Range: 0.01 mm – 0.5 mm (customizable)

• Common electrical grades: 25 μm ~ 200μm

• Width: Up to 1500 mm, Custom slitting available

PTFE Insulation Film Application

This high-performance PTFE insulation film is engineered for demanding applications across aerospace, high-voltage, and high-frequency environments. It serves as critical insulation in aircraft wiring, transformer and motor barriers, and RF communication equipment, offering exceptional dielectric strength and lightweight protection for sensitive electronic assemblies.

The PTFE insulation film  is also ideal for industrial electrical systems, providing reliable arc-resistant barriers, insulating gaskets, and protective wraps for precision conductors and cables. Its versatile design ensures dependable performance in specialty electronic assemblies and high-temperature wiring applications where robust insulation is essential.