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A baseplate is made up of a metal stamped eyelet for the production of glass to metal seals. The baseplate has bores for accommodating respective metallic leads and insulating glass beads. The bores have on their inner walls abutments arranged at the lower rim of the bore, which abutments can consis

A baseplate is made up of a metal stamped eyelet for the production of glass to metal seals. The baseplate has bores for accommodating respective metallic leads and insulating glass beads. The bores have on their inner walls abutments arranged at the lower rim of the bore, which abutments can consist of integrally formed notches, protrusions or projections, or can be of an annular shape, thereby preventing sagging through of the normally cylindrical glass bead when melted during sealing of the glass onto the conductor and into the bore.

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A method of locating a conductor in a bore through a metallic structural member, with a glass-to-metal seal between the interfacing surfaces of the bore, glass and conductor, the method comprising the steps of: (a) providing a glass bead of a diameter less than the bore through the metallic structur

A method of locating a conductor in a bore through a metallic structural member, with a glass-to-metal seal between the interfacing surfaces of the bore, glass and conductor, the method comprising the steps of: (a) providing a glass bead of a diameter less than the bore through the metallic structural member; (b) surrounding the conductor with the glass bead; (C) keeping the glass bead from touching the metallic structural member by decreasing the diameter of the bore at the location spaced from one side of the metallic structural member to a diameter less than that of the bead; (d) orienting the metallic structural member with said one side facing downwardly; (e) inserting the glass bead in the bore; (f) abutting the bead with the reduced diameter portion of the bore; (g) performing steps (a)-(f) to form an assembly of the metallic structural member, glass bead and conductor; (h) heating at least the glass bead of the assembly to a temperature sufficient to fuse the bead to the surface of the bore; and (i) allowing the glass to cool so as to form the glass to metal seal.