Recently, many customers have been unable to distinguish products in the process of inquiry. In particular, the distinction between silica gel and PVC is the most prominent. The following is a brief compilation of the general differences between the next two materials. I hope it can help you
　　Silica gel trademark (also known as silicon trademark) is made of liquid silicone oil and solid silica gel heated in the mold by vulcanizing machine. According to its properties and components, it can be divided into organic silicon and inorganic silicon. Inorganic silicon is a highly active adsorption material, which is usually prepared by reacting with sodium silicate and sulfuric acid, aging, acid foaming and a series of post-treatment processes. Silica gel is insoluble in water and any other substances Solvent, non-toxic, tasteless, environmental protection, stable chemical properties, does not react with any substance except strong alkali and hydrofluoric acid. Various types of silica gel form different microporous structures due to different manufacturing methods. The chemical composition and physical structure of silica gel determine that it has many characteristics that are difficult to be replaced by other similar materials: high adsorption performance, good thermal stability, stable chemical properties, high mechanical strength and so on.
　　PVC rubber seal trademark is mainly a plastic product made by dropping liquid materials into the mold through plastic dropping process, heating, baking and cooling for a period of time, and finally reversing the mold. The main components of PVC rubber seal are DNP oil, PVC powder, stabilizer and soybean oil.
　　The main difference between silica gel trademark and PVC rubber seal trademark is that the material feels different. Silica gel has a high environmental protection coefficient, which can be tested by the European Union. PVC rubber seal has a strong smell and a low environmental protection coefficient, which is common in the domestic market.