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VITON O-ring materials are usually made of fluororubber (FKM) or nitrile rubber (NBR).

VITON is an O-ring made of fluororubber material invented by DuPont, with a circular cross-section, hence it is called an O-ring. It can work in environments such as high temperatures, chemicals, and fuels, and is typically used in aerospace and industrial applications where high temperatures and irritating chemicals are required.

In addition, nitrile rubber is also a commonly used O-ring material. It is a synthetic rubber that is resistant to oil, fuel, and other chemicals, and has heat and wear resistance, making it an ideal choice for automotive and industrial applications.

Other materials such as silicone (VMQ), ethylene propylene rubber (EPDM), and polyurethane (PU) can also be used for O-ring manufacturing. They have characteristics such as heat resistance, cold resistance, ozone resistance, water resistance, and steam resistance, respectively, and are suitable for specific occasions.

The above information is for reference only, and the appropriate O-ring material needs to be selected based on the actual usage environment.