Thermocouple Wire Insulation

Continuous Operating Temperatures for Insulated Thermocouple Wire

Temperature Ratings Physical Properties
Part # Type of Insulation Max Continuous Temp. Abrasion Resistance Moisture Resistance Chemical Resistance
301 Vitreous Silica Braid / Vitreous Silica Braid 982°C 1800°F * * * *
302 Double Glass Braid Singles / Glass Braid Duplex 482°C 900°F * * * * * * * * *
303 Enamel, Glass Braid Singles / Glass Braid Duplex 482°C 900°F * * * * * * * *
304 Standard Glass Braid Singles / Glass Braid Duplex 482°C 900°F * * * * * * * *
305 Double Glass Wrap Singles / Glass Braid Duplex 482°C 900°F * * * * * * * *
306 Non Impregnated Glass Braid / Non Impregnated Glass Braid Duplex 482°C 900°F * * * *
308 Double Cotton Braid Singles / Cotton Braid Duplex 88°C 190°F * * *
* * * *
310 Skive TFE Tape, TFE Impreg Glass Braid Singles / Fused TFE Tape Duplex 260°C 500°F * * * * * * * * * * *
311 “S” Glass Braid Singles/ “S” Glass Braid Jacket No Binder 704°C 1300°F * * * * * * *
350 Nextel Ceramic Fiber 1204°C 2200°F * * * * * *
501 Polyvinyl (PVC)/ Nylon 105°C 221°F * * * * * * * * * * *
502 Polyvinyl (PVC) Singles / Polyvinyl (PVC) Duplex 105°C 221°F * * * * * * * * * *
504 Nylon Singles / Nylon Duplex 150°C 302°F * * * * * * * * * *
505 Polyvinyl (PVC) Single / Fused for Ripcord Duplex, No Jacket 105°C 221°F * * * * * * * * * *
506 FEP Singles /FEP Duplex (30 AWG and Smaller) 204°C 400°F * * * * * * * * * * * *
507 FEP Singles/ FEP Jacket (29 AWG and Larger) 204°C 400°F * * * * * * * * * * * *
508 Wrapped and Fused TFE Singles / Wrapped and Fused TFE Duplex (twisted and shielded) 260°C 500°F * * * * * * * * * * *
509 FEP Singles / Twisted pair with drain wire / Alum. mylar or Polyimide / FEP Duplex (twisted and shielded) 204°C 400°F * * * * * * * * * * * *
510 PVC Singles / Twisted pair with drain wire / Alum. mylar / PVC Duplex (twisted and shielded) 105°C 221°F * * * * * * * * * *
511 Polyimide Tape Wrap Singles/ Twisted Pair No Jacket 260°C² 500°F * * * * * * * * * * * *
512 Polyimide Tape Wrap Singles with Colored Tracers/ Polyimide Tape Wrap Jacket 260°C² 500°F * * * * * * * * * * * *
513 Polyimide Singles / Polyimide Duplex 260°C² 500°F * * * * * * * * * * * *
514 ETFE Singles / ETFE Duplex 150°C 302°F * * * * * * * * * * * *
515 ETFE Singles / Twisted Pair / ETFE Duplex 150°C 302°F * * * * * * * * * * * *
516 PFA Singles / PFA Duplex 260°C 500°F * * * * * * * * * * * *
517 PFA Singles/ Twisted Pair or 4 Conductors/ Aluminum Polyimide Shield and Drain/ PFA Jacket 260°C 500°F * * * * * * * * * * * *
520 TFE Enamel Singles/ FEP Ripcord 204°C 400°F * * * * * * * * * * * *
521 “S” Glass Braid Singles/ “S” Glass Braid Jacket with Binder 704°C 1300°F * * * * * * *

²Polyimide film will withstand 316°C but the laminate FEP layer will dissolve at temperatures above 260°C

KEY
* Poor
* * Fair
* * * Good
* * * * Excellent