What is a ring used for?

A ring is one of the oldest and most versatile objects humans have made, and its use depends entirely on its type. The most common use is as jewelry and symbolism. Wedding rings, engagement rings, class rings, championship rings, and signet rings are worn on fingers to signify love, commitment, achievement, status, or family heritage. In engineering and mechanics, a ring is a fundamental component. O-rings are used to create watertight and airtight seals in plumbing, engines, and faucets. Retaining rings, snap rings, and piston rings hold parts together or maintain compression inside an engine. In architecture and construction, rings provide structural strength. In sports, the ring is the enclosed square where boxing, wrestling, and mixed martial arts take place. In gymnastics, still rings are used for strength routines. In everyday life, rings hold things together, like key rings, curtain rings, napkin rings, and binder rings. In astronomy, planetary rings are disks of ice and rock orbiting planets like Saturn. Symbolically, a ring represents infinity, wholeness, and cycles because it has no beginning or end.