... ,White 3.competitive price 4.OEM is welcome Rubber o ring1.Materials advice: rubber (EPDM, also NBR, SBR, CR, NR, etc),as ... , from drawing, new tool designs to mold support and samples. Mold/samples lead-time:For trial order mold, usually in 7daysFor mass production ... mold, usually in1- 2 weeks6.Color: black, transparent,red, blue,any ...