| 摘要 |
The object of the present invention is to effectively prevent the rust generation on a flange portion (45) and to prevent the deformation of the flange portion (45) due to the filling pressure of a molding material in the manufacture of a sealing device whereby a seal main body comprising a rubber-like elastic material and having a portion that covers both surfaces of the flange portion (45) of a metal reinforcing ring (4) is integrally formed on the reinforcing ring by means of a metal mold (1). To this end, the flange portion (45) of the reinforcing ring (4) is formed in advance with a shape which is distributed unevenly in the direction opposite the direction in which the flange portion is deformed from its original shape by the filling pressure of the molding material. |
