... seal: 1.1M8748,2P3395,5K1078,6T8439,7M0481,9W7225,6T8439 2.size:50-1,000mm 3.hardness:58-62HRC 4.we are ... .9mm292.8mm38mmR3000298mm328mm42mmmetal seal: Our metal seal which is widely applied in track mounted engineering plant, coal mine engineering plant, heavy loading ...