A rubber ring is a ring made out of rubber, a type of polymer that is derived from the sap of rubber trees or produced synthetic. Rubber rings are known for their excellent elasticity, durability, and resistance to temperature and weathering. They are used in a wide range of applications, such as sealing, vibration dampening, and as a cushioning material. Rubber rings are commonly used in mechanical and plumbing applications, as well as in electrical and electronic equipment. They can be used as seals for pipes and fittings, as gaskets for machinery, and as vibration isolators for engines. Rubber rings can be custom-made to fit different sizes and shapes, and can also be made in a variety of colors and durometers (hardness level).