Supply Stock Code: SW-HB1

Hot Block is the must-have heat-absorption putty for every brazing, soldering, or welding job. This non-toxic, 100% reusable putty blocks direct and conductive heat transfer on all types of surfaces and metals — joints, valves, fittings, composite panels, rubber, and plastics. It stops heat transfer of up to 3000°F in just half an inch, so you can braze right next to heat-sensitive components without damage. Wrap it around copper, aluminum, and steel pipes, or press it onto flat panels to stop warping while welding bodywork. Because it's reusable, one 1 lb container lasts a long while. Every tech's kit should have one.

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