How to improve the service life of molding silicone rubber ?

First, we must choose the suitable hardness of silicone rubber according to the size of the product when making the mold.
Second, silicone can't be added too much silicone oil, because the larger the amount of silicon oil is added, the mold will become soft, the tension and tear strength will be reduced. The silicone rubber naturally will not be durable, the service life will be reduced, advising customers not to add silicone oil.