ZEEMAX Heat Transfer Tapes Offer Fast, Efficient Method of Improving Heat Tracing Efficiency. ZEEMAX tape form heat transfer compound is designed to improve heat flow in steam traced process piping. Installs quickly and is ready to use – no special curing required. Can be used from –200°F to 400°F. Trowel grade compounds also available.• Material: Carbon steel tubing ASTM A513 Type 1a, 11 gauge. • Heater dimensions: 2" wide, 1" high, from 6" to 20' long. • Inside volume: 8.5 cu.in. per foot minimum. • Surface Contact Area: 24 square inches per foot. • Weight: 2.25 pounds per foot. • Maximum working pressure: 300 psig. • Maximum working temperature: 600°F. • Pressure test: 1.5 times maximum working pressure.