Watlow MI Band Heater

Fits extruder, die, and injection-molding barrel heating where you need a mineral-insulated band clamp heater rated to 1400 °F (760 °C) with a stainless sheath and low-mass construction for fast thermal response — not a temperature sensor or transmitter.

Key advantages

• High-temp MI band — mineral-insulated clamp heater rated to 1400 °F (760 °C).
• High watt density — up to 100 W/in² on large diameters per OEM STL-MIB sheet.
• Stainless sheath — stainless steel sheath and side-fold cover for barrel durability.
• Fast response mass — low-mass MI construction for quick thermal response on extruders and dies.

Typical applications

• Extruder and injection-molding barrel heating where clamp bands are preferred.
• Die and nozzle heating up to the published 1400 °F (760 °C) limit.
• OEM machine builds that specify MI band wattage, voltage (to 480 V), and lead style.

Selection guide

• Duty — Mineral-insulated band heater (heater product filed under Temperature category).
• Operating temperature — Up to 1400 °F (760 °C).
• Watt density — Up to 100 W/in² on large diameters (per OEM STL-MIB sheet).
• Supply — Maximum voltage to 480 V.
• Sheath / cover — Stainless steel sheath and side-fold cover.
• Mounting — Band clamp on cylinder/barrel (attached clamp bars); extruders, dies, injection molding machines.
• Electrical termination — Type B/C/E/H leads, post terminals, SLE options (12.5 A/pair leads; 30 A posts).
• Wiring — Fiberglass leads in metal braid; post terminals 10-24.
• Response — Low-mass MI construction for fast thermal response.
• Notes — Values aligned with Watlow STL-MIB-0618/0611 specification sheet. No process transmitter output; no IP or hazardous-area marks published in the OEM extract used here.

Common mistakes

• Treating this SKU as a temperature sensor — it is a resistive heater; pair it with a separate sensor/controller.
• Ordering watt density above what the barrel diameter and process can take — OEM documentation allows up to 100 W/in² on large diameters only.
• Undersizing lead current capacity (12.5 A/pair leads vs 30 A posts) for the ordered wattage and voltage.
• Specifying voltage above 480 V — maximum voltage in the sheet is 480 V.
• Expecting published IP, ambient, or hazardous-area ratings from this page — those fields are empty in our JSON; send site conditions in the RFQ.
• Temperature instruments · Temperature buying guide

When to RFQ / what to tell us

1. Barrel/die OD, heater width, and clamp style.
2. Required wattage / watt density and operating temperature (must fit ≤1400 °F / 760 °C).
3. Available supply voltage (≤480 V) and phase.
4. Termination preference (lead type B/C/E/H, post terminals, SLE) and lead length.
5. Quantity and ship-to country; note if a matching temperature sensor/controller is also needed.

Request a Quote · Get selection help

Specs

Documents

• Watlow MI Band specification sheet

FAQ

Q: Is the MI Band a temperature sensor? A: No. It is a mineral-insulated band heater. Use a separate sensor and controller for closed-loop temperature control.

Q: What temperature and voltage limits apply? A: Operating temperatures up to 1400 °F (760 °C); maximum voltage to 480 V per the specification sheet.

Q: What terminations are available? A: Type B/C/E/H leads, post terminals, and SLE options (12.5 A/pair leads; 30 A posts). State current and lead preference in the RFQ.

Q: What should I send for a quote? A: OD, width, wattage, voltage, termination, quantity, ship-to. Available for systems that use Watlow MI Band heaters — we do not claim authorized-dealer status.

Links

• Temperature instruments · Temperature buying guide
• Request a Quote · Get selection help