An O-ring is a round, rubber washer used to create a watertight or airtight seal between two surfaces in plumbing fittings, faucets, valves, or other components. It is designed to fit into a groove, compressing as the fitting is tightened, ensuring a leak-proof connection. O-rings are made from various materials, such as neoprene, silicone, or nitrile, depending on the application’s pressure, temperature, and chemical exposure. Regular inspection and replacement of O-rings are essential to prevent leaks, maintain pressure, and ensure reliable operation of plumbing systems.
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