The Everwell cork insulation tape works perfectly in both cold and hot applications. It adheres firmly around pipes and fittings for maximum sealing. Great at preventing condensation and dripping of cold pipes. The QE cork insulation tape specifications include: temperature range: -20°F to 160°F / -29°C to 71°C, adheres easily to metals and/or itself, thermal conductivity: 1.26 BTU/Hr. (sq. ft.) — °F/Inch, water absorption: .02%, composition: synthetic rubber asphalt with cork filler, no asbestos content, and prevents rust.