What factors will affect the sealing performance of silicone rubber products?


Silicone rubber materials can be widely used in the fie […]

Silicone rubber materials can be widely used in the field of waterproof sealing because of their good resilience. However, in the product development stage, we have often encountered problems that many companies have encountered poor sealing performance of silicone rubber products or fail to meet the design requirements. , Caused a lot of trouble to them, so I found us. Combining our 25 years of experience in the silicone rubber industry, today I will share with you what are the specific factors that affect product sealing!
First of all, the sealability of a product is not a problem of a single product, but is composed of multiple parts. All parts that are in direct contact with the sealing surface of the product, no matter which product has a problem, may cause the seal to fail. To give a simple example, most seals The parts are composed of an upper shell and a lower shell with a silicone rubber sealing ring/gasket in the middle. If the surface of the upper shell or the lower shell carrier is not flat, or the gap is too large, the pressure variable is unreasonable, which may cause problems. occur. The deeper reason is the design problem, including product design, mold design, material design and so on.
Excluding these external reasons, let’s talk about the reasons for the sealing ring of silicone rubber products. The first material itself should be based on the specific use environment of the product, such as the use temperature of the product, what substances are in contact with the product, and so on. Choose the right material. The second is whether the appearance and size of the product manufacturing process meet the design requirements, burr control, and dimensional tolerances.
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