If it is necessary to ensure the reliable and safe operation of the workpiece throughout its entire service life, vacuum technology is worth considering. This is especially true for the maximum high voltage or insulation resistance of workpieces, as well as highly complex workpiece geometries. When potential gaps arise between corners and edges, these gaps will collect bubbles during the sealing process, which may lead to component failure or complete failure. For example, transformers, batteries, motors, and ignition coils may also have very small bubbles remaining in their coils. This can be prevented by sealing in a vacuum