Self-fusing Silicone Tape - Black - Tape self-fuses without heat. Forms a solid rubber insulation in 24 hours. High dielectric strength, wide operating temperature and ease of application. Used to insulate and protect harnesses, splices, motor leads, etc. 1" x 10ft. x 20 MIL - For high temperature applications up to 500°F (260°C) - Leaves NO residue Ultra Resistant to UV, oil, salt, and corrosive chemicals No special tools required.