The aim of the VDI guideline is to analyze and organize the applicable seal connection conditions based on the technical standard. Furthermore to complete the conditions, including latest research results, and advise the user in selection, interpretation, design, and assembling of flange joints in particular consideration of the gaskets. VDI 2200 guideline components therefore are: review, systematization and completion of existing and relevant standards and rules; selection procedure and arithmetic technique for flanges, bolts, seals; information on the installation of flange joints for piping and tanks. In addition, it contains results of research and practical application of gaskets that cannot be standardized currently. They can provide additional information on operational application to manufacturers and operators of machines and plants including flange joints.