Stresses in Glass‐Metal Seals: I, The Cylindrical Seal

A consideration of the effects of viscous flow during cooling of a beaded wire seal following annealing treatment leads to a refinement of the theory of Hull and Burger. With the corrections provided, excellent correlation is obtained with experimental stress measurements. Cylindrical seals with metal as the external member are also considered. It is shown that the expansion necessary for the best match depends on the geometry of the seal. In general, metal‐glass seals should be annealed at a temperature above that used for the glass alone.