Food grade silicone rubber is usually used to contact some food related products in our lives, such as common baby pacifiers, silicone rubber tableware, food molds, etc., which will be made by meeting the food grade standards, and the certification standard is FDA food grade contact certification; Industrial grade silicone rubber is generally used to make industrial products.

How do we distinguish food grade silicone rubber? First of all, we need to understand the concept. In addition to industrial silicone rubber, medical silicone rubber contains food grade silicone rubber. That is to say, just distinguish between food grade silicone rubber and industrial silicone rubber; Industrial silicone rubberl is catalyzed by organic tin. Organic tin has some pungent taste, while food silicone rubber has no taste. Food silicone rubber and industrial silicone rubber can be distinguished by simple smell;

In addition to smelling, we can also distinguish by the operating proportion of silicone rubber. The proportion of industrial silicone rubber is usually 100:2, while the proportion of food grade silicone rubber is mostly 10:1 or 1:1; If the ratio is not obvious enough, we can distinguish it by the molding process. Industrial silica gel is cured by contacting the moisture in the air and the catalyst, so the ambient temperature will not affect its curing conditions too much, while food silica gel can be cured at room temperature or by heating. The higher the ambient temperature is, the faster the curing time will be.

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