vulcanized fiber

American  

noun

1. a leatherlike substance made by compression of layers of paper or cloth that have been treated with acids or zinc chloride, used chiefly for electric insulation.

---

Etymology

Origin of vulcanized fiber

First recorded in 1870–75

Example Sentences

The company, which was founded in Cologne, Germany, in 1898, has seen several evolutions in its designs, with suitcases made of leather, wood, aluminum and vulcanized fiber.

From Los Angeles Times • Apr. 21, 2025

This mode of connection is more flexible than a short length of heavy cable, and looks well, the wires being held neatly together by vulcanized fiber bridges.

From Scientific American Supplement, No. 711, August 17, 1889 by Various

Slips of insulating material are laid between the coils and the dovetailed mouths of the grooves are closed with bone or vulcanized fiber, or other dielectric.

From Scientific American Supplement, No. 841, February 13, 1892 by Various