... and colors, its material spec can be CR,FPM,nature rubber, EPDM rubber etc, their characterisitic should be high/ low temperature-resistant ... injection workshop, sheet metal processing workshop, rubber workshop and mold/tooling workshop under group) MaterialSilicone or rubber (NR, SBR, NBR, EPDM, CSM, CR ... 20 to 30 daysMOQSmall orders are wecomed standard size black rubber automobile wheel hub cover