A sealing terminal composed of heating elements; internal connection lines 21a and 21b electrically connected to said heating elements; external connection lines from which power is supplied; a quartz glass body 24 formed with a plurality of grooves 24a in outer surface thereof to retain said internal and external connection lines therein; conductive foils 25a and 25b to electrically connect said internal and external connection lines; a quartz glass tube 23 to accommodate therein said internal and external connection lines with end portions thereof projecting out of said quartz glass tube, said quartz glass tube being fused to said quartz glass body at outer surfaces thereof; and a plug member 26 to block said quartz glass tube at an end thereof. This sealed terminal not only has less electrical resistance and is capable of supplying power to the heating element without generating sparks but also has a simple structure and is easily assembled such that the attachment work is carried out in a short time. <IMAGE>
