This International Standard specifies requirements for rubber hoses and tubing for use in the various air and vacuum systems found on internalcombustion engines. The standard does not cover hoses used for direct power-brake actuation in trucks and trailers, nor for air intakes and ducting within the passenger compartment. The highest-temperature hoses are generally used for turbocharger applications. All hoses and tubing remain serviceable down to -40°C.