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R and S Type Thermocouple Duplex Extension Wire

R and S Type Thermocouple Extension Wire


Item# EXFF-RS-20-25

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 C$76.28
5-9 C$72.47
10-24 C$68.65
25-49 C$64.84
50-99 C$61.02
100+ C$57.21

In stock

Lead Time (If not in stock): 2 weeks
R and S Type Thermocouple Extension Wire EXFF-RS-20-25 EXFF-RS-20-25
  • High Quality Type "R/S" Thermocouple Grade Wire
  • In Stock - Available for Immediate Shipment
  • Choice of Insulation, Wire Gage, & Length

EXFF-RS-20-25 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
Wire Gauge
Conductor Insulation
Cable Length
Overall Insulation
Overbraiding Type
Color Code Standard
Temperature Unit
Temperature Min
Thermocouple Calibration Type
Conductor type
Additional Feature
Cable Type
Number of Pairs
Special Limit of error

NSI Color Code :Positive Wire, Black Negative Wire, Red Overall, Green 

Use the table below as a guide for types available. The "To Order" box contains some examples of popular models. Use the "Part Number Builder" (Below Table) to get pricing for all available models. 
Insulation AWG

Insulation AWG
Insulation Max. Temp* Nominal
Conductor Overall °F °C
Glass 20 EXGG-RS-20 $480 Solid Glass Braid Glass Braid 392 200 .060 x .095 9
24 EXGG-RS-24 430 Solid Glass Braid Glass Braid 392 200 .050 x .080 5
Neoflon PFA 20 EXTT-RS-20 510 Solid PFA PFA 392 200 .068 x .116 11
24 EXTT-RS-24 480 Solid PFA PFA 392 200 .056 x .092 7
Polyvinyl 16 EXPP-RS-16 555 Solid Polyvinyl Polyvinyl 221 105 .118 x .195 26
Neoflon FEP 20 EXFF-RS-20 530 Solid FEP FEP 392 200 .068 x .116 11
24 EXFF-RS-24 430 Solid FEP FEP 392 200 .056 x .092 7
*Maximum temperature is for extension grade wire or insulation, whichever is lower.
Weight of spool and wire, rounded up to next highest lb. (does not include packing material).


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Rated 3 out of 5 by from Bad Decision The wire is fine. we have pulled into place. Bad decision on mmy part. I expected a much bigger Type "S" wire.
Date published: 2016-10-13
Rated 5 out of 5 by from Have used omega wire and tc for years . Omega, they are always the best supply for quality temperature control
Date published: 2023-09-28
Rated 5 out of 5 by from TC wire Everything went well, thank you for the quick turn-around time.
Date published: 2018-02-19
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Hi, what is the best isulation material for a high temperature enviroment, glass, Neoflon PFA or Neoflon FEP?. Thanks a lot for your support. Regards.

Asked by: Anonymous
Thank you for your inquiry. That depends on how high you want to expose the extension wire to but the glass, Neoflon PFA and Neoflon FEP all are rated up to a maximum temperature of 200 C (392 F). If you have any further questions, please email the Temperature Tech support at
Answered by: Application Engineer SP
Date published: 2022-05-17
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