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There are three methods for applying adhesives and sealants onto body assemblies. The first application method extrudes a round bead of adhesive onto body surfaces. The second application method is streaming or spraying adhesives and sealers. New methods and benefits for improving streaming and spraying are presented to improve production requirements. The third application method is by swirling mastic materials onto vehicle panels and body assemblies. This application method is rapidly gaining acceptance in North America. Swirling adhesives and sealants can provide a significant advantage over other dispensing methods. Analysis of customer processes and customer inputs indicate that there is a need for each of the three application methods. This paper describes the best method for each manufacturing process. By defining the variables important to the process, the user will be able to select the most appropriate solution for the process and optimize the manufacturer's success.