... ,NBR... 3.ISO9001: 2000 4.OEM/ODM are welcomed 1 Valve oil seal 2 Material: NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE,and ... friendly business relationship.Export products are include rubber widescreen,elbow,oil seal,o-ring andso on.8 According to customers' drawing,customized ... are undercontroled by Railway Ministry10 Designing and manufacturing all of oil seals, gaskedts,o-rings ,and so on. Valve oil seal