... and colors, its material spec can be CR,FPM,nature rubber, EPDM rubber etc, their characterisitic should be high/ low temperature-resistant ... aging resistant etc,we can produce all kinds of rubber products with different specifications and property according to customer' ... and mold/tooling workshop under group) MaterialSilicone or rubber (NR, SBR, NBR, EPDM, CSM, CR, HNBR, VITON, AFLAS) and more , ...