Reducing rubber joints, shock absorbers, also called reducers, pipe shock absorbers, shock absorber hose, flexible connectors, flexible connectors, high voltage connectors. Main characteristics of the metal pipe connection to resolve the problem of different caliber, while a noise damping effect, can save pipeline installation parts, and cost savings. It consists of tube, nylon cord enhanced rubber compound outer layer and the loose ball composed of metal flange. With high pressure, good elasticity, displacement volume, balance pipe deviation, absorb vibration and reduce noise effects, easy installation, and can be widely used in water supply and drainage, recycled water, HVAC, fire, paper, pharmaceutical , petrochemical, shipbuilding, water pumps, compressors, fans and other piping systems. Common type used to transport -15 ℃ ~ 120 ℃ in air, compressed air, water, water, oil, acid and alkali. Special type used to transport -30 ℃ ~ 250 ℃ over the medium or oil, strong alkali acid concentration, solid-state materials.