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Nextel or Silica Insulated Thermocouple Duplex Wire

High Temperature Thermocouple Wire with Nextel or Silica Yarn Fiber Insulation


Item# XS-KI-24-30M

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $370.32
5-9 $351.80
10-24 $333.29
25-49 $314.77
50-99 $296.26
100+ $277.74

In stock

Lead Time (If not in stock): 6 weeks
High Temperature Thermocouple Wire with Nextel or Silica Yarn Fiber Insulation XS-KI-24-30M XS-KI-24-30M
  • Ceramic Insulation Material is Overbraided on Std or SLE grade Wire
  • XC :Nextel 312 standard, rated to 1200°C (2200°F) Continuous, 1425°C (2600°F) Short Term
  • XS: Silica Yarn, rated to 1050°C (1900°F) Continuous
  • XR: Refrasil Vitreous Silica Fiber, suitable to 982°C (1800°F)

XS-KI-24-30M Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Temperature Max
Temperature Range
Thermocouple Calibration Type
Wire Gauge
Conductor Insulation
Cable Length
Additional Feature
Overall Insulation
Number of Pairs
Overbraiding Type
Special Limit of error
Color Code Standard
Temperature Unit
Temperature Min
Conductor type
Cable Type

  • Use With Sensor Type Thermocouple

Nextel insulation a high temperature ceramic is offered with in three types of overbraiding. XC is the standard braid, XT is a tight braid and XL is a loose braid. The three braids affect only the amount of Nextel used, not the overall temperature rating. Insulation is braided over each wire or leg then a final jacket of the same insulation is braided over the pair of wires.

XC4: Nextel 440 insulation has the highest temperature rating to 1375C (2500F)

Silica insulation is a high purity (SiO2 > 99%) ceramic yarn, that offers high temperature protection up to 2000°F at an economical price. Refrasil insulation is a vitreous silica fiber.

Inconel 600 ,304SS or Tinned Copper can be added and overbraided as the outer jacket over the Nextel insulation . This type of durable outer jacket can add abrasion protection and signal shielding.
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What is the density for part number XC4-K-24?

Asked by: Lu22
Hi Lu22, Thank you for the inquiry. This product does not have a rated density. From the wire spec page you can find the weight / 1000 ft spool and the nominal OD. https://assets.omega.com/pdf/cable-and-wire/thermocouple-and-rtd-wire-and-cable/XC_K_TC_WIRE.pdf Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2022-12-29

Is it durable enough to use it(XC-4) at least 50 times with inconel overbraid? One time usage is considered as increasing temp up to 750 and 04 hours of soaking time at 750 °C and again lowering temp to room temp.

Asked by: Anonymous1
Thank you for the inquiry. The XC-4 can handle this with the inconel over braid. The XC and XS can also take this temperature with inconel over braid. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2021-05-04
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