... on the hose Size tolerance:+/-0.5mm High temperature Cooling water hose for heavy truck parts1.EPDM ... rubber hose,used for water hose of machines,Temperature range:-40~150°C. NBR ... 180°C. Silicon rubber hose,used for high temperature hose of machines, -40~250°C ... Red, Blue4.Usage: for engine air intake, exhaust, water, oil resistance, turbocharger, radiators,intercoolers, oil application ...