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Ultratorch® UT-100Si Soldering Iron/Heat Tool

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  • Master's #1 Best Selling Butane Soldering Iron
  • 3 in 1 Tool, Functions as a self-igniting soldering iron, flameless heat tool and torch
  • Features oxygen free, copper based Ultratip soldering tips, with thick iron and chrome plating for extra long life and high thermal conductivity
  • Cordless, fill with Master's Ultratane Butane, ready to use in 30 seconds
  • Self-ignition with push button for fast, easy staring
  • Adjustable temperature control
  • Soldering temperature up to 932F, ideal for use with today's lead-free solder
  • Hot air temperature up to 1202F, perfect for shrinking Master's Solderseal electrical wire connectors
  • Refillable tank holds enough butane for 2 hours of operation


  • Kit Includes:
  • (1) Ultratorch
  • (1) Ultratip Soldering Tip 70-01-02
  • (1) Hot Air Tip 70-01-52
  • (1) Shrink Attachment 7--01-55
  • (1) Ejector and Cap

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Professional quality, self-igniting, butane-powered soldering/heat tool and torch with Ultratip technology

When professionals require a superior quality heat tool that doubles as a torch, the Master Ultratorch® UT-100Si is the most reliable solution. This industry-leading, three-in-one tool operates as a self-igniting soldering iron, flameless heat tool, and torch with a blue pinpoint flame. Each butane-powered soldering iron features oxygen-free, copper-based Ultratip® soldering tips with thick iron and chrome plating to ensure extra-long life and higher thermal connectivity than its competition. Every Ultratorch® UT-100Si kit comes complete with a soldering tip, heat tip, spanner wrench, open end wrench, shrink attachment, and protective cap. With a full tank of Ultratane® butane, you can use an innovative heat tool for up to two hours. Thanks to a built-in window, you can also monitor the fuel level while you work.

With the Master Ultratorch® UT-100Si, you can save a lot of time on applications and scenarios that arise within a normal workday. This lightweight heat tool self-ignites with a push button for fast, easy starting every time and offers the cordless convenience of portability. Heat tip temperatures can reach up to 1,202° F and maximum solder tip temperatures can reach up to 932° F, making it perfect for removing surface mount components, repairing vinyl surfaces, spot drying, and so much more. Don't just trust us – industry professionals have trusted Master Appliance since 1958. Enjoy more control with variable temperature by choosing the Ultratorch® UT-100Si for your shop today. If you have any questions about this product, please contact us today for further assistance.

  • Ultratip is the long lasting, oxygen free, copper based, iron and chrome plated soldering tip with a built in catalyst, tinned with lead free solder
  • Ultratip soldering tips have more than double the iron and chrome plating thickness of our competitors brass based tips, providing higher thermal conductivity and much long tip life
  • New Models with serial number 2491710 and up have 3-in-one: soldering iron, heat tool and NEW torch mode functionality!
  • Standard with soldering tip, heat tip, shrink attachment and protective cap
  • Lighter in weight than competitive models, making it easy to hold and use over extended periods of time
  • Built-in fuel filter for consistent fuel ignition
  • Adjustable temperature up to 1200°F
  • Built-in window indicates fuel level
  • Optional accessories available and interchangeable between UT-100 and UT-100Si
  • UL & GS/TUV Listed for user safety
  • Use to pinpoint heat, remove surface mount components, repair vinyl, shrink heat shrink tubing, solder and desolder, spot dry, and more
UT-100Si Cordless, self-igniting, butane gas, soldering/heat tool and torch
Dimensions: 10.3" L (260 mm) Equivalent to Electric Iron: 20 to 80 Watt
Recommended Fuel: Master Ultratane® Butane Gas Tank Capacity: 1 fl. oz. (28 cc)
Approx. Operating Time: 120 min. Net Weight: 5.5 oz. (100 g)
Approx. Heat Tip Temp.: 1202° F (650° C) Shipping Weight: 1 lb.
Approx. Solder Tip Temp.: 482° F to 932° F (250° C to 500° C) Shipped Empty

Ultratorch® UT-100Si Soldering Iron/Heat Tool

The Master Ultratorch® UT-100Si is industry's premier butane powered, self igniting portable heat tool and torch. This Ultratorch functions as a soldering iron, a flameless heat tool, and a torch with a blue pin point flame.

Three in one soldering iron, flameless heat tool and torch. Self-igniting with a push button for fast, easy starting. Equivalent to a 20 to 80 watt electric iron.

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