According to the use of various fields to choose different hardness of silicone rubber products, the lowest hardness can be about 10 degrees, special silicone rubber products can reach about 280 degrees! The commonly used silicone products are between 30 degrees and 70 degrees.

There is also ordinary silicone rubber products, which can not be made by the process of liquid silicone rubber. It will produce a series of problems, for example, silicone rubber products are not self-disassembly, and the difference of materials leads to a problem that the product burrs are not smooth and the appearance has a gross margin. Therefore, liquid silicone rubber is suitable for low degree silicone rubber products.

Another is common silicone rubber process is solid silicone rubber product process, at present, the entire silicone rubber industry internal solid silicone rubber product process can do the lowest hardness is 30 degrees, the highest degree is 80 degrees, although the higher degree can also do, but the defect rate is too high, the product is very brittle, also not self-dismantling. So the most suitable hardness number for solid state process is between 30 degrees and 70 degrees. Can not do softer products, but self - removal is better, beautiful product appearance, no burrs.

The hardness of silicone rubber is the same as that of ordinary rubber, which is distinguished by Shore hardness. The higher the general degree, the harder the hardness is. The hardness of silicone rubber raw materials can reach 0 degrees to 90 degrees. silicone rubber raw materials are divided into solid silicone rubber and liquid silicone rubber, solid silicone rubber (mixing silicone rubber) hardness can reach 20 degrees to 90 degrees, commonly used for 30 degrees to 70 degrees. And if you want to demand lower hardness of silicone rubber raw materials, it is necessary to use liquid silicone rubber, liquid silicone rubber hardness is 0 degrees to 20 degrees, commonly used for 10 degrees to 20 degrees.

In general, the most widely used in our daily life is solid silicone rubber (mixing silicone rubber). The hardness of the commonly used in processing is 30 degrees 70 degrees. If there are special needs, the hardness of solid silicone rubber can reach 20 degrees, the hardest can reach 90 degrees, but the lower the hardness of the molding process is more difficult. And if the hardness of silicone rubber reaches 80 degrees - 90 degrees, the more difficult the process is when mixing, and the machine equipment used is not the same. And high hardness silicone rubber raw materials in molding scrap rate is very high, the product is very brittle, good self-dismantling. Therefore, if you want to produce silicone rubber products, the most appropriate hardness should be between 30 degrees - 70 degrees.