O'Sullivan Films is a recognized leader in calendered vinyls and other engineered thermoplastic films, with a wide array of finishing capabilities.

Most films are custom formulated for performance specific applications, including automotive interiors, healthcare devices, building products, and pressed polished sheeting.

With headquarters and manufacturing facilities in Winchester, Virginia, O'Sullivan Films employs over 400 people. The company was founded in 1896, and in 2010 became a member of the Hornschuch Group AG, Weissbach Germany.