... rubber, nitrile rubber, EPDM, neoprene rubber, viton DuPont & Dow elastomers, natural rubber, SBR, fluorosilicone, acrylics4) Usual color: red, blue, yellow, black5 ... etc 6. Custom shapes, sizes, colors, materials are available upon request. Our company: We,seashore manufacturial Co.Ltd, is professional in rubber and ...