... .Material:ACM,ECO,NBR 3.Process:Extrusion 1, Auto ventilation Hose for Crankcase2,Material:ACM,ECO,NBR3,Process:Extrusion4,Detail:ItemAuto ventilation ... ,Oil Resistance,Good Tensile StrengthHardness60-90Shore APressure range0.6Mpa~5MpaResistance temperature range-40°C~180°C Executive StandardVDA6.1 ,SAE ,ASTM2000 ... experience. Customer drawings and OEM orders are welcomed4, auto ventilation Hose