... ,5SUMITOMO S280FJ BulldozerTY320,D155,D85,T140-1 KobelcoSK07,SK200 excavator seal kit: Excavator seal kit are used in construction machinery and mining ... is HRC58-62, the working face precision within 0.015um , flatness up to 0.1um-0.2um ,the lifetime is more than 3 ... .But if you have your own drawings,that's ok. Excavator seal kit is applicable to various engineering machinery and mining ...