... with various sizes and colors, such as O-ring, U-ring, E-ring etc, its material spec can be silicone rubber, ... injection workshop, sheet metal processing workshop, rubber workshop and mold/tooling workshop under group) MaterialSilicone or rubber (NR, SBR ... type50 to 400 tonsCertificationISO9001:2000Molding servicewe have our own mold workshop, can provide various moldLead time for prototype moldabout ...