... NBR... 2.ISO9001: 2008 4.OEM/ODM are welcomed O ring 1.O ring 2.Material: NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE,and ... we have our own mold center, can develop most kinds O ring of high tech requireds.7.Experience in export business:exporting ... friendly business relationship.Export products are include rubber widescreen,elbow,oil seal,o-ring andso on.8.According to customers' drawing,customized specifications ...