... a specially compounded silicone rubber, which enhanced the strength, fireproof, high temperature insulation ozone, oxygen, sun, weather and oil workability.Properties ... outdoors and ages may be reached to 10 years.3. High insulation: Dielectric constant from 3 to 3.2, breakdown voltage ... -manufacture, construction, piping flexility and sealing industry. Single Silicone Rubber Coated Glass Fiber YS3200