Specifications: Material: Polyethylene Shrinkage rate: 2:1 ( will maximum shrink to 1/2 of its supplied diameter ) Minimum Shrinkage Temp: +70 Degree Celsius Full Shrinkage Temp: +125 Degree Celsius maximum Operating Temperature:-55 to 125 Degree Celsius Rated voltage: 1000V Dielectric strength: 1 KV Item Shape: Round/Flat