STANDARD CARTRIDGE HEATER SPECIFICATIONS
1. High Temperature Lead Wires for temperatures up to 550°C.
2. High Impact Ceramic Cap slows contamination and is suitable for high vibration applications. Deep holes in cap prevent fraying of leads when bent.
3. Nickel-Chromium Resistance Wire for maximum heater life, evenly wound for even heat distribution.
4. High Purity Magnesium Oxide fill selected for maximum dielectric strength and thermal conductivity, highly compacted for maximum heat transfer.
5. 304 Stainless Steel Sheath for oxidation resistance in a wide variety of environments. 316 Stainless Steel and Incoloy® are also available. Please consult the application guide in the back for help in determining which material is best for your application.
6. TIG Welded End Disc to prevent contamination and moisture absorption.
| Nominal Diameter | Minimum Diameter | Maximum Diameter | Std. Lead Wire Gauge | Max amps with Std. Lead wire | Max lead wire gauge | Maximum Amps | Maximum Volts |
|---|---|---|---|---|---|---|---|
| 1/8” | .119 | .124 | 24 | 3.6 | 24 | 3.6 | 240 |
| 1/4” | .244 | .249 | 24 | 6 | 22 | 9 | 300 |
| 6.5 mm | .250 | .255 | 24 | 6 | 22 | 9 | 300 |
| 5/16” | .306 | .311 | 24 | 6 | 22 | 9 | 300 |
| 8 mm | .309 | .314 | 24 | 6 | 22 | 9 | 300 |
| 3/8” | .369 | .374 | 22 | 9 | 18 | 15 | 480 |
| 10 mm | .388 | .393 | 22 | 9 | 18 | 15 | 480 |
| 12 mm | .466 | .471 | 22 | 9 | 18 | 15 | 480 |
| 12.5 mm | .486 | .491 | 22 | 9 | 18 | 15 | 480 |
| 1/2” | .494 | .499 | 22 | 9 | 18 | 15 | 480 |
| 13 mm | .506 | .511 | 22 | 9 | 18 | 15 | 480 |
| 17/32 | .525 | .530 | 22 | 9 | 18 | 15 | 480 |
| 14 mm | .545 | .550 | 18 | 15 | 14 | 26 | 480 |
| 5/8” | .619 | .624 | 18 | 15 | 14 | 26 | 480 |
| 16 mm | .624 | .629 | 18 | 15 | 14 | 26 | 480 |
| 17 mm | .663 | .668 | 18 | 15 | 14 | 26 | 480 |
| 11/16” | .682 | .687 | 18 | 15 | 14 | 26 | 480 |
| 19 mm | .742 | .747 | 18 | 15 | 14 | 26 | 480 |
| 3/4” | .744 | .749 | 18 | 15 | 14 | 26 | 480 |
| 25 mm | .978 | .983 | 18 | 15 | 14 | 26 | 480 |
| 1” | .994 | .999 | 18 | 15 | 14 | 26 | 480 |
• Length tolerance is ±3/32 or ±3% whichever is greater.
• Camber tolerance is .025 per foot of length. Slight camber is normally not a problem since the heater will flex
enough to enter a clean hole
• Wattage tolerance is +5%, -10%.
