... material: Metal 2, OEM orders 3, Quick delivery 4, strict quality control Mold for rubber product :1. Mould for all kinds of rubber ... Cavity/core steel: P20, 45#, Cr12MOV etc.4. Products Material: NBR, FPM, CR, EPDM, ACM etc5. Standard: ... of product more reasonable and advantaged. The material of moulding adopted Cr12MOV and heat treatment adopted ... less than 150000 PCS/set. Mold for rubber product