⚫ Type J Fiberglass TC Grade Wire
This Type J thermocouple-grade wire uses 24 AWG stranded Iron (+) and Constantan (-) conductors with fiberglass insulation for elevated-temperature measurement applications.
The fiberglass jacket is rated for temperatures up to 900°F (482°C). The white Iron (+) conductor is magnetic, providing an additional method for verifying Type J polarity. This configuration provides standard accuracy of ±4°F (±2°C) per ASTM standards and a recommended maximum signal distance of approximately 110 ft without amplification.
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Ideal Applications
🔥 High-temperature process measurement
🏭 Industrial ovens and heating equipment
🌡 Custom Type J thermocouple fabrication
⚙️ Process temperature monitoring
📈 Data acquisition and recording systems
🧪 Laboratory and test equipment
🧵 Applications requiring flexible stranded wire
| Calibration | Wire Insulation | Max Temp | Gauge | Wire Type | Signal Dist. | Product Code |
J + Iron - Constantan Positive = Negative = | GLASS BRAID GLASS BRAID | 900 F 482 C | 20 | solid | 280 ft | IWJ-20-GG |
| 20 | stranded | 280 ft | IWJ-20s-GG | |||
| 24 | solid | 110 ft | IWJ-24-GG | |||
| 24 | stranded | 110 ft | IWJ-24s-GG | |||
| 28 | solid | 44 ft | IWJ-28-GG | |||
| 30 | solid | 27 ft | IWJ-30-GG | |||
| 36 | solid | 7 ft | IWJ-36-GG | |||
| STAINLESS STEEL OVERBRAID | 20 | solid | 280 ft | IWJ-20-GG-SSOB | ||
| 20 | stranded | 280 ft | IWJ-20s-GG-SSOB | |||
| 24 | solid | 110 ft | IWJ-24-GG-SSOB | |||
| 24 | stranded | 110 ft | IWJ-24s-GG-SSOB | |||
TEFLON TEFLON | 500 F 260 C | 20 | solid | 280 ft | IWJ-20-TT | |
| 20 | stranded | 280 ft | IWJ-20s-TT | |||
| 22 | stranded | 200 ft | IWJ-22s-TT | |||
| 24 | stranded | 110 ft | IWJ-24s-TT | |||
| 24 | solid | 110 ft | IWJ-24-TT | |||
| 30 | solid | 27 ft | IWJ-30-TT | |||
| 36 | solid | 7 ft | IWJ-36-TT | |||
| 40 | solid | 8 in | IWJ-40-TT | |||
| STAINLESS STEEL OVERBRAID | 20 | solid | 280 ft | IWJ-20-TT-SSOB | ||
| 20 | stranded | 280 ft | IWJ-20s-TT-SSOB | |||
| 24 | solid | 110 ft | IWJ-24-TT-SSOB | |||
| 24 | stranded | 110 ft | IWJ-24s-TT-SSOB |
*"Signal Dist." relates to how far thermocouple signal travels without amplification.
- Part Number IWJ-24s-GG / TIPWRJ021
- Type "J" Wire Fiberglass Jacket 24 Ga. Stranded
- Fiberglass is rated at max 900°F / 482°C
- Accuracy ±2°C / 4°F per ASTM standards.
- Max Distance Signal will travel is 110 Ft. without amplification.
- (White ) Iron + / (Red) Constantan - ( White is Magnetic )
- Type "J" thermocouple grade wire Stranded 24 Ga. - cut to your required length
- Expert Technical Support
Compliance & Risk Mitigation
⚫ Maintains Type J alloy compatibility
🧵 TC-grade wire supports direct measurement
🔴 Correct polarity helps prevent reading errors
🧲 Magnetic Iron aids conductor identification
🔥 Fiberglass supports elevated temperatures
↔️ Observe recommended signal distance
💧 Protect Iron conductor from moisture
Use with compatible Type J thermocouple circuits and instrumentation. Verify polarity, insulation temperature limits, environmental conditions, wire gauge, and required signal distance before installation. The Iron (+) conductor should be protected from moisture where practical to reduce oxidation and corrosion. Where documented measurement validation is required, annual calibration of the complete temperature measurement system is important for confirming continued accuracy and proper operation.