extruded rubber o ring,silicone products 1.products material--silicone shore60A 2. ... according to you prototype or drawings. 3. Lead time for rubber mould:10—15days 4.Our 3D design software: SOLIDWORK/ UGNX ... /AUTOCAD and PDF.Molded Rubber Products:1, Material: NBR, CR, SBR, EPDM, IIR,NR, EP ... , pls take your time to visit our website. silicone parts--chalk holder