Specifications Substance: Zinc oxide paste Safety: Non-hazardous Weight: 1 oz. (28 grams) Specific  Gravity: 2.9 at 77°F Service Temperature: -40°F to 392°F Thermal conductivity: Exceeds 19.0 x 10-4 (calories/cm2/°C/sec/cm) Packaging: 1 oz. (28 gram) syringes