... 1M8748,2P3395,5K1078,6T8439,7M0481,9W7225,6T8439 2.size:50-1,000mm 3.hardness:58-62HRC 4.we ... seal: Our metal seal which is widely applied in track mounted engineering plant, coal mine engineering plant, ... D50-1,000mm, the rigidity is HRC58-62 and its life-span is 3,000HRS. Material is ... if you have own drawings,that's ok. And our products are selling nationally as well as Southeast ...