Fibrous wrapped insulation

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Electrical insulation in the late 19th and early 20th centuries made from a varnished cellulosic cloth or paper. The paper or fabric was impregnated with gums, oils, varnishes and asphalt to increase its water resistance, resistivity and heat capacity.

Synonyms and Related Terms

electrical insulation

Resources and Citations

  • Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996