High-Temperature Braided Fiberglass Thermocouple Wire

Series 321
Zesta Thermocouple Wire Series 321
Zesta Thermocouple Wire Series 321
The addition of color coding and impregnation to the high temperature fiberglass make this wire the next logical step for systems which exceed temperature capabilities of the standard glass insulated series.

Each conductor is covered with a color coded, high temperature fiberglass braid. This braid is then impregnated to enhance abrasion resistance and reduce fraying. The insulated conductors are laid parallel and covered with another braid of high temperature fiberglass and impregnation.


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Product Features

Performance Capabilities
  • Continuous temperature rating: 1300°F (705°C)
  • Heavy fiberglass braided yarn insulation
  • Twisted design has no jacket
  • Available with an optional metallic overbraid for additional abrasion resistance

Specifications

Insulation:
Heavy fiberglass braided yarn
Continuous use temperature:
  • 1300°F (705°C)
  • Resin retained to 400°F (204°C)
Single use temperature:
  • 1600°F (870°C)
  • Resin retained to 400°F (204°C)
Resistance properties:
  • Moisture: Good
  • Chemical: Good
  • Abrasion: Good

Applications

  • Heat treating
  • Aluminum and steel