o ring color code 1.Quick shipment. 2.Standard size in stock. 3.Most ... competitive price. 4.ROHS approved. Details about o ring color code: Materials Comply with ROHS, NBR, Silicone (VMQ), EPDM, Viton, etc ... projects with high efficiency.We have thousands of current molds for all kinds of o ring, AS568, JS, Metric and BS ...