Check the listing for details. SolderWeld SW-HB1 Hot Block Heat Absorption Putty for Brazing Soldering Welding. Condition: New. Listed at 63.75 USD. SolderWeld SW-HB1 Hot Block Heat Absorption Putty for Brazing Soldering Welding SolderWeld Part number SW-HB1Hot Block Heat Absorption PuttyA must-have when brazing, soldering, or welding!As a non-toxic, heat-absorbing putty, Hot Block will block direct and conductive heat transfer on all types of surfaces and metals, including joints, valves, fittings, composite panels, rubber, and plastics. Stops all transfer of heat down 3000 in half an inch. Wrap it around copper, aluminum, and steel pipes!Perfect for stopping warping while welding on flat panels or bodywork, too!Features:100% reusable for lifeStops heat transfer up to 3000 degrees F (1650 degrees C)Completely non-toxicProtects all surfaces, joints, valves, pipes and fittings Is this reusable?Answer: Yes it is. If it drys up add water to rejuvenate it.When your done using put it back in the tub.Y Product Details BrandSolderWeldManufacturerSolderWeldProduct TypeHot BlockMpnSW-HB1 SolderWeld Part number SW-HB1Hot Block Heat Absorption Putty. Protects all surfaces, joints, valves, pipes and fittingsA must-have when brazing, soldering, or welding!100% reusable for life. Completely non-toxicStops heat transfer up to 3000 degrees F (1650 degrees C) Check out my other items. -Powered by