Silicone tape. It melts creating a permanent seal against water and liquids. Excellent for taping wire and cable, it will insulate up to 8000 Volts, will not melt up to 500°F (260°C), and will withstand environmental conditions and UV rays like no other tape.
CLASS H SELF-VULCANIZABLE SILICONE TAPE
Available in widths of 25.4 mm and 38.1 mm, as well as rolls of 3 and 11 meter lengths. • Self-vulcanizing silicone tape withstands up to 260°C (500°F). • Remains flexible down to -62°C (-80°F).