characteristics of fireproof, high temperature insulation ozone, oxygen, sun, weather and oil workability Properties: Service Temperature -70°C~300°C Ozone, oxide, light and weathering aging resistance, excellent weather ability used in outdoors and ages may be reached to 10 years. High insulation: dielectric constant from 3 to 3.2, breakdown voltage from 20 to 50KV/mm Physical and chemical ...