Title: H. K. Porter Insulating Tapes Advertisement
Author: H. K. Porter Company
Publication Date: 1965
This ad says, "Need vinyl, silicone, glass or asbestos insulating tapes? Only Porter makes all four."
It also says, "Asbestos tape and tubing in braided and woven constructions are available in all electrical standard widths, thicknesses and grades."
Asbestos backed silicone is also mentioned.
1 Page Advertisement dated July, 1965. Thermoid Division, H. K. Porter Company, Inc.
Condition: Acceptable. Vertical crease and minor wear.