Rubber flexible joints are hollow rubber products used for flexible connections between metal pipes. Also known as rubber hose flexible connectors, flexible rubber joints, bendable rubber joints, high-pressure rubber joints, rubber shock absorbers, and more. They are categorized into three connection types: loose flange, fixed flange, and threaded, and into five structural types: single sphere, double sphere, unequal diameter, bent sphere, and wind pressure coiled pipes. Composed of inner and outer rubber layers, cord fabric, and steel wire rings, the tubular rubber components are vulcanized into shape and then combined with metal flanges or parallel joints. This product reduces vibration and noise and compensates for thermal expansion and contraction caused by temperature changes, and is widely used in various pipeline systems.