... .ozone resistance and aging resistance 3.well bending Silicone hot air duct Material:spring steel wire, silicone, glass fiber ... temperature duct, as suction and blast hose, suitable for hot air , blower, exhausting gas, etc.2.Heat resistant wellApplication ... Suction and blast hose, especially suitable:-For transmission hot and cold air.-For printing machines, blowers and compressors.-For ...