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Thermocouple Wire

Products / Thermocouple Wire

Whether you need extension wire to finish your new installation or premium survey wire to meet today’s tightest tolerances, GeoCorp will help you find the correct calibration, wire gauge, insulation, and temperature tolerances for your application.

High-Quality Thermocouple Extension Wire

Our raw material is pre-tested in our accredited in-house quality control laboratory to meet the special limits of error requirements. Our lab is ISO/IEC 17025 accredited by NVLAP (lab code 200496-0).

Looking for thermocouple wire that is superior to the special limits of error requirements?

Ask about GEOSPEC Thermocouple Wire, with maximum temperature correction factors NOT exceeding +/-2°F or 0.2%, whichever is greater. Contact us for more information or call 419-433-1101.

No extra fee for same day shipping on in-stock wire

We stock thousands of feet of thermocouple wire for same day shipping. We never charge an expedite fee for wire that’s already on the shelf.

Place a blanket order so you always have wire when you need it

You can work with us to setup a blanket order system, so you’ll have wire when you need it. Learn more about our services & capabilities

GeoCorp is a thermocouple wire manufacturer using the best technology in the thermocouple extension wire industry.
All raw materials are pre-tested and meet the special limits of error requirements.
GeoCorp manufactures thermocouple wire to meet a variety of thermocouple extension wire applications.
GeoCorp manufactures thermocouple wire to meet a variety of applications. Contact us today.

Wire Product Options

ANSI Calibration Types

  • Type K
  • Type J
  • Type N
  • Type R/S
  • Type T
  • Type E
  • Type C

B&S Gauge

  • 14ga
  • 16ga
  • 18ga
  • 20ga
  • 22ga
  • 24ga
  • 30ga

Metallic Over-braid Type

  • Stainless Steel
  • Alloy 600

Conductor Type/Tolerance

  • Thermocouple or Extension Grade
  • Special Limits per ASTM E230 or Tighter
  • Solid or Stranded Wire

Insulation Type

  • Light Ceramic Fiber
  • Heavy Ceramic Fiber
  • Extra Heavy Ceramic Fiber
  • High Temp Glass
  • Fiber Glass
  • Light Vitreous Silica
  • Heavy Vitreous Silica
  • Extra Heavy Vitreous Silica
  • PFA Teflon® (Extruded)
  • FEP Teflon® (Extruded)
  • FEP Teflon® + Shielded
  • PVC
  • PVC + Shielded
  • Fiberglass, Twisted Pair