Weather strip for vehicle

A weather strip to be attached along a door frame and a door belt line of a vehicle, comprising:

• one extruded weather strip extending along an inner periphery of the door frame, which is provided with a seal lip to come in sealing contact with a side periphery of a window glass;
• another extruded weather strip extending along the door belt line, which is provided with a seal lip to come into sliding contact with and seal against the door glass when the door glass is closed and is further provided with a means for engaging the door belt line of the vehicle;
• a molded corner member having a shape like a L and connected to one end of said extruded weather strip and to one end of said another extruded weather strip;
• an extruded extension seal lip fitted in a side surface of said molded corner member, said extruded extension seal lip extending from an end of said means for engaging in a longitudinal direction of said seal lip of said another weather strip so as to define a continuous sealing surface for coming into sliding contact with and to seal against the window glass when the window glass is closed;
• said seal lip of said one weather strip, said seal lip of said another strip and said extruded extension seal lip being respectively provided with a lubricity-treated layer on a surface thereof.