Abstract: An electrical-connector shell is made by first casting of a first plastic in a first mold a body having an inner wall extending parallel to an axis and having a radially outwardly directed surface, an outer wall extending parallel to the axis and having a radially inwardly directed surface confronting the radially outwardly directed surface and forming therewith an axially extending annular space, and an end wall closing an end of the space, joining ends of the inner and outer walls, and formed with an axially throughgoing hole opening adjacent one of the surfaces. Then this body is enclosed in a second mold formed with an annular cavity open radially toward the one surface and extending to the hole. A second plastic is then injected through the hole into the cavity to form on the one surface an annular seal ring.