... organic & inorganic chemicals, in blowers, dryers, autoclaves, mixers & vessels.O ring from our company is widely used all over the ... , such as a gas seal, water seal, oil seal etc. O-rings enquiries parameters: material, size, hardness, color, tolerance,temperature, ... material imported from the famous companies in Europe, US, etc.b). Green environmental protection.c). Non-standard model customized is ...