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Currently, there seem to be many types of silicone rubber materials available, such as phenyl silicone rubber, fluorosilicone rubber, phenylene silicone rubber, nitrile silicone rubber, borosilicone rubber, and so on. However, silicone rubber gaskets have not yet been included in the standard HG/T 20606-2009 \"Non-metallic flat gaskets for steel pipe flanges\". Are there any application examples of it in chemical pipelines? How effective is it?
The use of silicone rubber gaskets in chemical pipelines is not widespread, as the chemical resistance and temperature resistance of silicone rubber may not meet the demands of some harsh chemical environments. However, in some low-pressure and low-corrosivity environments, silicone gaskets are sometimes used, and they exhibit good sealing performance and aging resistance. Due to its good flexibility and resistance to compressive deformation, silicone rubber can provide effective sealing solutions in applications where high requirements for sealing performance and temperature resistance are not necessary. However, since different types of silicone rubber (such as the phenyl silicone rubber and fluorosilicone rubber you mentioned) have distinct physical and chemical properties, their performance under specific conditions also varies. Before considering the use of silicone rubber gaskets, it is recommended to thoroughly evaluate factors such as chemical agents, temperature, and pressure in the working environment in order to select the most suitable material type. At the same time, since silicone rubber gaskets have not yet been included in certain industry standards such as HG/T 20606-2009, their suitability and safety should be further verified before use. .
Is there any gasket manufacturer that has a product manual for silicone gaskets? By looking at the product’s specifications, one can figure out what scenarios it can be used in.