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Xiamen Better Silicone Co.,Ltd is a famous China rubber o-ring factory and supplier with customized silicone o-ring, please feel free to contact us. Rubber O Ring Product Description O ring is the simplest part among seals, although it is the best and most efficient seal. The structure of sealing pat is very simple, for this reason , it could be used in many fields. It is widely used in sealing products such as acid resistance, alkaline resistance, many kinds of pumps. It is popularly used in sealing devices in petroleum, chemical, medicine, mobile manufacture, war indus