Rubber air hose is composed of three parts: tube, reinforcement and cover. The tube is made from high quality black and smooth synthetic rubber, mainly NBR, which is resistant to abrasion, corrosion and oils. The reinforcement is made from multiple layers of high strength synthetic fiber, making the hose have solid structure. The cover is made from high quality black and smooth synthetic rubber, is resistant to fire, abrasion, corrosion, oils, weather, ozone and aging. The hose has a long service life as a result..