vulcanite

/ˈvʌlkənaɪt/
noun
  1. A hard, black material made from rubber that has been vulcanised, often used for combs, buttons, and electrical insulators.
    • Vulcanite was once a popular material for fountain pen bodies.
    • Antique combs were often made of vulcanite because it was strong and easy to shape.
    • Some early telephone parts used vulcanite as an insulator.
Synonyms
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