Sealing connecting structure of booster and catalyst converter

The utility model relates to a sealing connecting structure of booster and catalyst converter, include: catalyst converter flange, sealing ring, booster flange and clamp. The catalyst converter flange is equipped with and combines flange annular and the bellied guide boss that the terminal surface is sunken for the catalyst converter flange. The booster flange is equipped with and combines the direction recess that the terminal surface is sunken for the booster flange. The height and the sealing ring highly uniform of flange annular. Guide boss and direction recess cooperation connection, the sealing ring is installed in the flange ring inslot, and the catalyst converter flange combines terminal surface and booster flange to combine the terminal surface to paste the tight fit, and clamp ring compresses tightly and is fixed around the outer circumference of catalyst converter flange and booster flange, two combination terminal surfaces. The utility model discloses increase guide structure and flange annular gr