Abstract: A pipe fitting cover is provided for covering a pipe fitting which has been covered with insulation. The pipe fitting cover is a flexible, resilient, sheet formed in a shape generally corresponding to the external shape of the pipe fitting and larger than the external shape of the pipe fitting to accommodate insulation between the pipe fitting and the pipe fitting cover. The sheet has a hole intermediate the ends of the sheet. A clear window insert is secured in the hole whereby insulation covered by the pipe fitting cover can be viewed with the pipe fitting cover in place on the pipe fitting.

Abstract: A method for obtaining a conductive molding composition for a capacitive information disc record having uniform and predetermined performance properties wherein the conductive molding composition comprises carbon black and a molding resin. The method comprises determining the melt viscosity of a conductive molding composition for a capacitive information disc record which has the desired performance properties, and preparing said conductive molding composition so that it has said melt viscosity.

Abstract: A method for obtaining a capacitive information disc record conductive molding composition having a desired melt viscosity wherein the conductive molding composition comprises carbon black and a plastic molding resin. The method comprises the steps of measuring the surface area of the carbon black particles; determining the relationship of the amount by weight of carbon black and the surface area of the carbon black particles to the melt viscosity of the conductive molding composition; and formulating the conductive molding composition by having carbon black present in an amount which is in accord with the relationship for the desired conductive molding composition melt viscosity.