SHOP ALL HIGH TEMP

Wire America supplies a wide range of specialized High Temperature Wire (Switchboard SIS, TGGT, MG, SRG-K, UL 1330 and SRML). Built with durable Teflon PTFE, silicone rubber, mica glass, & fiberglass braid, these cables are certified for continuous use in extreme heat, with temp ratings ranging from 125°C (257°F) up to 550°C (1000°F). Essential for industrial furnaces, commercial ovens, kilns, motor leads and high-heat OEM environments.

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High Temperature Wire

High-Temperature Industrial Wire & Cable Solutions When standard THHN or PVC-insulated wire fails due to extreme heat, specialty high-temperature wire is required to maintain system integrity. Wire America provides a comprehensive inventory of industrial-grade cables engineered to withstand continuous operating temperatures from 125°C up to 550°C (1022°F). Whether you are wiring an industrial furnace, a commercial oven, or a high-performance motor lead, we stock the specific insulation types—including Silicone, Teflon (PTFE), and Mica Glass—needed to prevent insulation breakdown and electrical failure.

Key Features
  • Extreme Thermal Resistance: Our selection includes wire rated for 150°C, 200°C, 250°C, and 450°C to meet the most demanding thermal environments.
  • Specialized Insulations: Features high-performance materials like Silicone Rubber, Teflon PTFE, and Mica Glass for maximum heat dissipation.
  • Rugged Protective Braids: Most high-heat cables are finished with a fiberglass braid to provide extra resistance to abrasion and mechanical damage.
  • Corrosion-Resistant Conductors: Utilizes tinned copper, nickel-plated copper, or nickel-coated copper to prevent oxidation at high temperatures.
  • Industrial Certifications: Manufactured to meet or exceed UL and CSA standards for hazardous and high-heat OEM environments.
Common Applications
  • Industrial Furnaces & Kilns: Type MG (Mica Glass) is the primary choice for extreme heat environments up to 450°C.
  • Commercial Ovens & Appliances: TGGT wire is frequently used in commercial cooking equipment and drying ovens rated for 250°C.
  • Motor Leads & Internal Wiring: SRML (Silicone Rubber Motor Lead) provides the flexibility and heat resistance needed for high-performance motors.
  • Switchboard & Control Panels: SIS wire is the standard for high-density wiring in power distribution boards where 125°C protection is required.
  • Heating Elements: Used as lead wire for strip heaters, band heaters, and other industrial heating components.
Installation Note
  • High-temperature wires like MG are optimized for dry, high-heat environments. For applications involving moisture or chemicals alongside high heat, ensure you select a cable like TGGT with a PTFE (Teflon) jacket to ensure long-term reliability.

Resources & Guides

Category_Buying Guide
What is SRML High Temp Wire?
November 25, 2025
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Category_Buying Guide
What is MG High Temp Wire?
December 02, 2025
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Category_Buying Guide
What is SIS Switchboard Wire (UL 3173) - 125°C?
January 12, 2026
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Category_Buying Guide
What is TGGT High Temp Wire?
December 02, 2025
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Category_Buying Guide
TGGT vs. MG: Which High-Temperature Wire Do You Need?
January 03, 2026
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Which High-Temp Wire Is Best? 125°C to 550°C Selection Guide
March 09, 2026
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What is Nickel-Plated Copper Wire? Going Beyond Tinned Copper
January 19, 2026
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What is PTFE Insulation? The 250°C High-Performance Shield
March 05, 2026
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What is Silicone Rubber Insulation?
January 05, 2026
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