There are dozens of different types of O-rings categorized primarily by the elastomeric polymer material they are manufactured from, each tailored to specific chemical, temperature, and pressure environments. Common material types include Nitrile (Buna-N) for general-purpose oil and water resistance, Viton (FKM) for high temperatures and harsh chemical compatibility, Silicone for extreme hot and cold temperature stability, EPDM for superior weather and steam resistance, and Neoprene for moderate outdoor applications. Additionally, O-rings vary widely in cross-sectional shape, hardness durometer ratings, and standard metric or imperial sizing standards, ensuring that engineers and technicians can find a precise sealing solution for automotive, plumbing, and industrial machinery applications.
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