Abstract: A vacuum tube insert assembly includes a flared insert piece having an annular flange and a stem each constructed of glass. The stem extends axially from the flange. The flange surrounds a perimeter edge of a plug concavity defined by the stem. Feed-through pins pass axially through the stem and are sealed thereto. The pins terminate inside of the concavity to form a plug. A socket connects to the plug within the concavity and includes receptacles that removably couple to the pins, with an engagement feature preventing erroneous plug and socket connections. A method includes axially inserting the pins through the stem at a fixed relative position such that the pins are arranged within the plug concavity, sealing the stem such that the stem is vacuum-sealed to the pins, thereby forming the plug, and removably coupling mating receptacles of the socket to the pins.

Abstract: A vacuum tube insert assembly includes a flared insert piece having an annular flange and a stem each constructed of glass. The stem extends axially from the flange. The flange surrounds a perimeter edge of a plug concavity defined by the stem. Feed-through pins pass axially through the stem and are sealed thereto. The pins terminate inside of the concavity to form a plug. A socket connects to the plug within the concavity and includes receptacles that removably couple to the pins, with an engagement feature preventing erroneous plug and socket connections. A method includes axially inserting the pins through the stem at a fixed relative position such that the pins are arranged within the plug concavity, sealing the stem such that the stem is vacuum-sealed to the pins, thereby forming the plug, and removably coupling mating receptacles of the socket to the pins.