Thermocouple Wire - Duplex Insulated
Iron-Constantan Duplex ANSI Type J
ANSI Color Code: Positive Wire, White; Negative Wire, Red;
Overall, Brown
NEWPORT Electronics does not use reprocessed PFA, FEP, or PVC in
manufacturing thermocouple wire. |
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Insulation1
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Model
#
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AWG
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Type
Wire
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Insulation
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Max.
Temp
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Nominal
Size
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Wt.†
lb/1000'
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Conductor
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Overall
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°F
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°C
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Ceramic**
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XC-J-14
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14
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Solid
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Nextel
Ceramic
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1100
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590
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.140
x .200
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38
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XC-J-20
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20
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900
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480
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.135
x .190
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16
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XT-J-20
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20
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.105
x .155
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15
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XL-J-20
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20
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.095
x .135
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14
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XC-J-24
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24
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700
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370
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.115
x .175
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12
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XT-J-24
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24
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.088
x .132
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11
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XL-J-24
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24
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.078
x .116
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10
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Silica*
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XS-J-14
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14
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Solid
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Silica
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1100
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590
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.140
x .200
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35
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XS-J-20
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20
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900
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480
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.105
x .155
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12
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XS-J-24
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24
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700
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370
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.088
x .132
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10
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High
Temp. Glass**
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HH-J-20
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20
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Solid
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High
Temp. Glass
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900
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480
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.060
x .105
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9
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HH-J-24
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24
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700
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370
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.055
x .090
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5
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Glass
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GG-J-14
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14
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Solid
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Glass
Braid
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900
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480
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.060
x .095
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9
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GG-J-20 |
20 |
Solid |
.060 x .100 |
9 |
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GG-J-20S
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20
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7 X 28
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.050
x .080
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5
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GG-J-24
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24
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Solid
|
700 |
370 |
.050
x .085
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5
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GG-J-24S
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24
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7 X 32
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.045
x .075
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4
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GG-J-28
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28
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Solid
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Glass Wrap |
Glass Braid |
700 |
370 |
.040
x .055
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3
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GG-J-30
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30
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Solid
|
600
|
320
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.037
x .050
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3
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GG-J-36
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36
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Solid
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.033
x .045
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2
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PFA
Glass
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TG-J-30
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30
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Solid
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PFA
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Glass
Braid
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500
|
260
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.034
x .047
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2
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TG-J-36
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36
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.028
x .038
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2
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TG-J-40
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40
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.026
x .035
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2
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PFA
High Per-
formance
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TT-J-20
|
20
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Solid
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PFA
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500
|
260
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.068
x .116
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11
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TT-J-20S
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20
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7
X 28
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.073
x .126
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11
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TT-J-22S
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22
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7
X 30
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.065
x .133
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9
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TT-J-24
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24
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Solid
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.056
x .093
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6
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TT-J-24S
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24
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7
X 32
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.063
x .102
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6
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TT-J-30††
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30
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Solid
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.024
x .040
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2
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TT-J-36††
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36
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Solid
|
.019
x .030
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2
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TT-J-40††
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40
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Solid
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.017
x .026
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2
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FEP
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FF-J-20
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20
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Solid
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FEP
|
392
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200
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.068
x .116
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11
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FF-J-24
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24
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.056
x .092
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5
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Polyvinyl
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PR-J-24 |
24 |
Solid |
Polyvinyl
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Rip Cord*** |
221
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105
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.050 x .085 |
5 |
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PR-J-24S
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24
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7 X 32
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Polyvinyl
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.082
x .134
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5
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1 Additional
Type J insulated wires are available. See Fused Tape Insulated TFE-J and KK-J Series.
†Weight of spool and wire rounded up to the next highest lb. (does not include packing material).
††Overall color clear
*Has color tracers on jacket and conductors.
**Has trace thread in Positive leg, Negative leg is red, overall has trace thread.
*** Two insulated leads bonded together, but with no overjacket.
Some wires available with Special Limits of Error; consult Sales for pricing and availability.
Ceramic Weave Note: |
XC |
standard ceramic insulation with maximum insulation density. |
XT |
more tightly woven with reduced insulation density. |
XL |
loosely woven with the minimum insulation density. |
Spool Pricing
To order standard length spools, multiply the 1000' price by the multiplier and round to the nearest dollar.
Spool Pricing |
500 ft: (1000 ft price) x 0.5 |
200 ft: (1000 ft price) x 0.3 |
100 ft: (1000 ft price) x 0.175 |
50 ft: (1000 ft price) x 0.1 |
25 ft: (1000 ft price) x 0.0625 |

NEWPORT can cover any insulated wire in our handbook with metal overbraiding to protect against wear and abrasion. Overbraiding adds durability and electrical shielding for improved performance.
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† All dollar amounts on this site are shown in US currency.
Ordering Example: (1) TT-J-20-500 PFA Insulated, Type "T", (Ironr-Constantan), Thernocuple Wire = $235
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Part Number Builder |
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Option Descriptions
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(1)
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Insulation
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Select HH for High Temp Glass (20 & 24 AWG Only) GG for Glass TG for PFA and Glass TT for Neoflon PFA (High Performance) FF for Neoflon FEP (20 & 24 AWG Only) PP for Polyvinyl (24 Gauge Stranded Only) PR for Polyvinyl Rip Cord (24 AWG Only) XC for Ceramic(14 20 24 AWG Only) XT for Ceramic(20 & 24 AWG Only) XL for Ceramic(20 & 24 AWG Only) XS for Silica (14 20 24 AWG Only)
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(2)
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Gage
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Select 20 for 20 AWG 20S for 20 AWG (Stranded) 24 for 24 AWG 24S for 24 AWG (Stranded) 28 for 28 AWG 30 for 30 AWG 36 for 36 AWG 40 for 40 AWG
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(3)
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Spool Length
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Select 25 for 25 Feet 50 for 50 Feet 100 for 100 Feet 200 for 200 Feet 500 for 500 Feet 1000 for 1000 Feet
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| NOTE: All combinations may not be valid, check spec sheet for valid part numbers. |
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Keywords:J Type Duplex Insulated Thermocouple Wire
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