DuPont Performance Elastomers, LLC manufactures and supplies general purpose and specialty elastomer products. Neoprene is the generic name of an artificial rubber developed by the DuPont Company in 1930 to 1931. The records consist of a mix of historical and contemporary documents assembled to celebrate the fiftieth anniversary of neoprene in 1981, enlarged to cover the seventieth anniversary in 2001, and kept up with subsequent additions.

DuPont Performance Elastomers, LLC manufactures and supplies general purpose and specialty elastomer products. Viton, the first fluoroelastomer, grew out of Dr. Dean R. Rexford's (1915-1997) research of DuPont's Organic Chemicals Department in 1954. The material proved remarkably stable when exposed to chemicals, oils, solvents, and high temperatures, making it ideal for seals, gaskets, O-rings, and similar components in the aerospace and automotive industries. This collection contains materials relating to the history of Viton fluoroelastomer assembled for its 50th anniversary in 2007. They include advertisements, trade catalogs, a copy of the original patent, and a company chronology of developments with Viton between 1954 and 1975.