Information on dielectric materials desired from industry

The Bureau would like to receive from industry, and, in particular, from equipment manufacturers, the following types of information on electrical insulating materials: (1) the weak points of the materials, (2) experiences in the use of the materials in equipment, and (3) comments on specification limits for the materials. Data is presented on key properties of three types of insulating materials; high temperature vinyl tubing, silicone varnished fiber-glass cloths, and silicone-glass laminates, with the end in view of encouraging comment along the above lines.