George Oenslager (September 25, 1873 – February 5, 1956) was a Goodrich chemist who discovered that a derivative of aniline accelerated the vulcanization of rubber with sulfur. He first introduced carbon black as a rubber reinforcing agent in 1912.
Oenslager attended Harrisburg & Phillips Exeter Academies, AB 1894, AM 1896. He first worked for the Warren Paper Co. in Maine from 1896 until 1905. He then worked for the Diamond & B.F. Goodrich Rubber Companies from 1905 until 1940. During World War I Oenslager inflated the first Hydrogen Balloon in the US.
Oenslager received his Ph.D. from Harvard under Prof. Theodore William Richards.
He was awarded the Perkin Medal in 1933 for his discovery of organic accelerators, specifically thiocarbanilide. This development crucial to the commercialization of both natural and synthetic rubber. Oenslager was awarded the Charles Goodyear Medal in 1948.
He was married to Ruth Alderfer Oenslager.