1.O ring 2.Material: EPDM,Silicon,FPM,NBR... 2.ISO9001: 2008 4.OEM/ODM are welcomed O Ring, ... EPDM O Ring, Viton O Ring 1 O ring 2 Material: NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE,and so on3 Application ... long term and friendly business relationship.Export products are include rubber widescreen,elbow,oil seal,o-ring andso on.8 According ... all of oil seals, gaskedts,o-rings ,and so on. NBR O ring