Tempco Custom Heater Manufacturing

Insulated Thermocouple & Extension Wire Insulation types


Thermocouple extension grade wire is only calibrated up to 400°F (204°C).

Image Single Conductor Duplex Conductors Temperature Rating ANSI Color Coded Physical Properties
Insulation Impregnation Insulation Impregnation Continuous Single Reading Abrasion Resist. Moisture Resist. Chemical Resist.
Glass Braid insulation Glass
Braid
Silicone Modified
Resin (retained to 
400°F [204°C])
Glass Braid Silicone Modified
Resin (retained to
400°F [204°C])
900°F
(482°C)
1000°F
(538°C)
Yes Fair Good Good
Double Glass Wrap Double
Glass
Wrap
Silicone Modified
Resin (retained to
400°F [204°C])
Glass
Braid
Silicone Modified
Resin (retained to
400°F [204°C])
900°F
(482°C)
1000°F
(538°C)
Yes Fair Good Good
High Temp Glass Braid High
Temp
Glass
Braid
High Temp
Varnish (retained to
400°F [204°C])
High
Temp
Glass
Braid
High Temp
Varnish
1300°F
(704°C)
1600°F
(871°C)
Yes Good Fair Good
Polyvinyl (PCV) Polyvinyl
(PVC)
Polyvinyl
(PVC)
-20 to +221°F
(-29 to 105°C)
221°F
(105°C)
Yes Good Excellent Good
FEP Extr. FEP Extr. FEP Extr. 400°F
(204°C)
500°F
(260°C)
Yes Excellent Excellent Excellent
Kapton® Kapton® Kapton® 500°F
(260°C)
800°F
(427°C)
Yes
(Indiv. only)
Excellent Excellent Excellent
Polyvinyl (PVC) with Drain Wire & Aluminum/Mylar Shield Polyvinyl
(PVC)
Polyvinyl
(PVC)
Twisted
-20 to +221°F
(-29 to +105°C)
221°F
(105°C)
Yes Good Excellent Good
Vitreous Silica Fiber Vitreous
Silica
Fiber
Vitreous
Silica
Fiber
1600°F
(871°C)
2000°F(
1093°C)
No Fair Fair Good
Ceramic Fiber Ceramic
Fiber
Ceramic
Fiber
2200°F
(1204°C)
2600°F
(1427°C)
No Good Fair Good

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Wood Dale, IL 60191-1452 USA
Phone: 630.350.2252   Toll Free: 888.268.6396
Fax: 630.350.0232   Email: info@tempco.com

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Fax: 52.55.5561.6889
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