Among other uses, Tesa's Xtreme Conditions Premium tape is recommended for electrical insulation (12,000 volts), sealing painting and compressed air hoses, repairs on dirty or sensitive surfaces, extensive sealing, or for repairs under water.
TESA 4600 Xtreme Condition Self amalgamating tape, 25mm x 10mm roll
Tesa's new Xtreme Condition tape is appropriate for both temporary and permanent applications. It offers immediate seal, even under water, and doesn't leave residue when removed.
http://www.cintastesa.es/reparacion/video/extrem.webm
Measurements: 25mm x 10m