18 Gauge High Temperature Wire

TOT Wire & Cable’s 18 AWG High Temperature Wire is engineered to deliver safe and reliable electrical performance in extreme heat environments. Made with high-purity copper conductors and insulated using silicone rubber, PTFE (Teflon), or fiberglass, this wire is ideal for use in high-heat industrial, automotive, and HVAC applications.

  • 18 Gauge High Temperature Wire 1024x1024

18 Gauge High Temperature Wire


Heat-Resistant Copper Wire for Demanding Applications

  • Conductor Type Solid or Stranded Bare Copper
  • Wire Gauge 18 AWG
  • Insulation Silicone Rubber / PTFE / Fiberglass
  • Voltage Rating 300V – 600V
  • Rated Temperature Up to 200°C (varies by material)


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TOT Wire & Cable’s 18 AWG High Temperature Wire is engineered to deliver safe and reliable electrical performance in extreme heat environments. Made with high-purity copper conductors and insulated using silicone rubber, PTFE (Teflon), or fiberglass, this wire is ideal for use in high-heat industrial, automotive, and HVAC applications.


🔧 Key Features

  • Excellent Heat Resistance: Rated for temperatures up to 200°C – 250°C, depending on insulation

  • Durable Construction: Available in solid or stranded copper for stable conductivity

  • Premium Insulation Options: Choose from Silicone, PTFE, or Fiberglass for specific conditions

  • UL Listed & RoHS Compliant

  • Chemical and Oil Resistance: Withstands harsh operating environments


📐 Technical Specifications

PropertyValue
Conductor Size18 AWG
Conductor TypeSolid or Stranded Bare Copper
Insulation MaterialSilicone / PTFE (Teflon) / Fiberglass
Temperature Rating150°C – 250°C (varies by insulation type)
Voltage Rating300V – 600V
Outer DiameterApprox. 2.1 mm – 2.8 mm
ComplianceUL 5256 / UL 5107 / UL 1332 / RoHS

📌 Applications

  • HVAC systems and furnace wiring

  • Electric motor and coil leads

  • High-temperature lighting circuits

  • Industrial machinery and ovens

  • Automotive and marine equipment


✅ Why Choose TOT Wire & Cable?

  • Flexible MOQ and Custom Spools

  • Certified Quality Control (ISO + UL)

  • Direct Factory Pricing

  • Fast Delivery for Urgent Needs


📞 Contact Us for a Quote

Looking for 18 gauge high temperature wire that meets your exact requirements?
TOT Wire & Cable provides competitive pricing, expert support, and reliable solutions.

📧 inquiry@totcables.com

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