... and cold runner are available) types.3. The common mold steel we use are NAK80, P20 ... experience in making rubber moulds, especially for rubber molds of electronic rubber parts, automotive rubber parts, ... RoHS, silicone or rubber (NR, SBR, NBR, EPDM, CSM, CR, HNBR, VITON, AFLAS and more)Hardness ... shore A toleranceColor: for rubber, usually black, for silicone, can be in any color as you wantMachine type ...