128 a is coupled to pin 120 through contact wire 121 and lead wire 128 b is dead ended within the press seal 124 ribbon wires 125 are used to facilitate sealing filament 132 is connected between the lead wires 128 a and 128 b mica 136 is attached to the lead wire 128 a coupled to the contact pin 120 the mica 136 is placed between the filament 132 and the press seal 124 the filament 132 has an emission material thereon the lamp illustrated in fig2 a has a construction such that the contact pins only come out of one end of the lamp a wire extends from one end of the lamp to the other to provide an electrical coupling for the other filament a similar construction is illustrated in u s pat no 4 701 101 entitled u201c elongated tubular lamp construction u201d issuing to ellner et al on oct 13 1987 which is herein incorporated by reference in its entirety this embodiment permits the lamp to be electrically connected to a socket or fixture at one end only in fig2 a the vapor lamp 210 has an envelope 212 and end caps 214 and 216 on each end contact pins 218.