METHOD FOR MANUFACTURING SEALING DEVICE

摘要

The object of the present invention is to effectively prevent the rust generation on a flange portion and to prevent the deformation of the flange portion 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 of a metal reinforcing ring is integrally formed on the reinforcing ring by means of a metal mold. To this end, the flange portion of the reinforcing ring 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.

主权项

1. A method of manufacturing a sealing device, the method comprising:
a step of integrally molding a seal main body made of a rubber-like elastic material having a portion covering both surfaces of the flange portion of the reinforcing ring in the reinforcing ring made of a metal within a metal mold, wherein said flange portion is previously formed into a shape which is unevenly distributed to an opposite side to a deforming direction by filling pressure of a molding material from its original shape.