O -rings , also known as O-rings, are a sealing element in the shape of a circular ring designed to prevent leaks of liquids or gases between two surfaces in contact.
O-rings are used to seal mechanical connections and prevent pressure loss or fluid leaks in hydraulic, pneumatic, and industrial systems.
The most common materials are: NBR (Nitrile), FKM, EPDM, Silicone, or PTFE. Each material offers different levels of chemical, thermal, and mechanical resistance.
The gasket is compressed between two surfaces, creating a barrier that prevents the passage of liquids or gases even under pressure.
NBR gaskets are notable for their excellent performance with mineral oils and greases, while FKM (Viton®) gaskets offer greater chemical resistance and withstand higher temperatures.
FKM and PTFE gaskets typically offer high resistance to numerous aggressive chemicals.
O-rings are identified by inner diameter, outer diameter, and thickness.
Shore hardness indicates the material's resistance to deformation. The higher the Shore value, the stiffer the joint.
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