... ,White 3.competitive price 4.OEM is welcome Rubber o ring1.Materials advice: rubber (EPDM, also NBR, SBR, CR, NR, etc),as ... .Rapid development line, from drawing, new tool designs to mold support and samples. Mold/samples lead-time:For trial order mold ... PP bag inside, strength carton outside, or as your request. Rubber o ring KSH0706