... mold design 3.Trial order welcomed 4.OEM/ODM EPDM custom-made o-ring features: 1.Material: NBR/SBR/NR/EPDM/CR ... production mold, usually in1- 2 weeks8.Packing method: PE bag with carton box9.Color: Regularly black,blue,silicone can accordint to ... .OEM& ODM available, specification,drawing or samples, any shape. EPDM custom-made o ring