Fibrous wrapped insulation
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.
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Sources Checked for Data in Record
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996