... : Metal 2, OEM orders 3, Quick delivery 4, strict quality control Valve seal mould:1. Mould for all kinds of ... Single, multi-cavity3. Cavity/core steel: P20, 45#, Cr12MOV etc.4. Products Material: NBR, FPM, CR, EPDM, ACM etc.5. ... moulding consistency and make the mould cavity surface to Ra0.4, the rest Ra0.8. We have been serviced ... manufacturers and won a good reputation from them. Valve seal mould tool