EMT

EMT is self-fusing Medium voltage insulation tape. Idea of wire and cable insulation, Conductor insulation for plastic-insulated cables upto 36 kV,  Insulation and sealing for communication cable splices, pipeline protection remedy and water proof sealing.

EMT-20, EMT-30 suitable for different voltage grade for your reference to choose as spec. below 

Features:
Durable, Extremely flexible, Easy application
Fuses to form a homogeneous, cavity-free compound within a short space of time
Fully removable
Ozone-resistant, Weatherproof
No electrolytic corrosion
Superior electrical properties
Excellent adherence to a wide range of substances
Superior physical properties 

Material
EPR base