A multipurpose tape, consisting of silicone rubber and a releasing sheet adhesive, can form a chemical combination when touching itself. It is fusing immediately, insulated, waterproof, and moisture-proof, resistant to high and low temperature, arc and ozone, anti-corrosion, and anti-aging. It can be widely used in the insulation of the electric industry and emergency repair. It is also waterproof and moisture-proof, so it can be used underwater as well.