Original oil and gas trade magazine vintage ad for JOHNS-MANVILLE of New York City, NY. Select a J-M Chempac Gasket for Greatest Protection in Critical Service! Teflon. Used in the chemical, food and process industries, wide use in missiles, aircraft, automobiles and in electrical and electronic units. This unique 1962 old petroleum chemical industry equipment magazine advertisement would display beautifully matted and framed. Nice graphics.