Gutta Percha (pt. 1 of 3)

Not attacked by marine plants or animals, a problem which had disabled previous undersea cables.

Gutta Percha (pt. 2 of 3)

Did not become brittle, unlike unvulcanized rubber already in use.

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Gutta Percha (pt. 2 of 3)

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Gutta Percha (pt. 3 of 3)

Bioinert, resilient, and is a good electrical insulator due to a high dielectric strength.