... all kinds of new and old international O-ring.Good quality and best prices1.Material: NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE ... relationship.Export products are include rubber widescreen,elbow,oil seal,o-ring andso on.7.According to customers' drawing,customized specifications ... Railway Ministry9.Designing and manufacturing all of oil seals, gaskedts,o-rings ,and so on. Import NAK seals