a powder adhesive composition for bonding an elastomer to metals or other rigid substrates comprising a powdered film forming polymer having a liquefaction temperature above room temperature and is capable of forming rubber tearing bonds between an elastomer and a substrate . the adhesive composition is shelf stable and free flowing at room temperature to allow for ease of storage and electrostatic spray application , yet melts or flows at elevated temperatures to form a film on a coated substrate prior to elastomer bonding .