PURPOSE: To form a seal line by means of a sealant into a continuous something as well as to make its own sealing function possible to be brought into full play.

CONSTITUTION: A weather strip 5 is provided with two extrusion molding parts 8A and 8B and a die forming part 9 to be situated in a corner part. A trim part 13 of this extrusion molding part 8A at the side of a roof part is fitted in a flange, and the die forming part 9 is attached to a frame 4 by a stad bolt 14 or the like at the side of the backside 9a. In addition, a first sealant 17 is coated to a bottom part 13a of the trim part 13, while a second sealant 18 is stuck to the backside 9a of the die forming part 9. The second sealant 18 is fully extended till it is reached to the first sealant 17 and it is stuck even to a level different part 15 existing in space between the bottom part 13a and the backside 9a. Therefore, the weather strip 5 comes to be continuously sealed to the frame by both these first and second sealants 17 and 18 in consequence, so its sealability will in no case be damaged at all.