Brake chamber T30: Service brake chamber Application for semi-trailer and heave-duty truck parts Maximum Working Pressure: 1MPa Life-Time: e1, 000, 000 cycle Leading Standard: SAE J1469-95 Tested and certified in accredited labs Ozone-resistant rubber components Surface: Black Stroke: 64mm Air Inlet Thread: 3/ 8' ' -18NPTF / M16 * 1.5 www( dot) brake-chamber( dot) com web( at) yhhuahai( dot) com