Abstract
Vulcanization molding of rubber product like oil seal is performed by past experience, trial and error. In order to reduce surplus rubber and defective product, numerical analysis of flow phenomena of unvulcanized rubber was performed using FIDAP. The analysis was conducted at constant viscosity without considering the effect of the heat. The results showed that the filling state at external region was difference between experimental and numerical results, but the filling state at internal region represented good agreement between experimental and numerical results. It was clarified from the numerical results that shear stress act during unvulcanized rubber fill up to a narrow channel such as side surface metal insert.
