... 4. Color: Black, red, green, etc Oil seal---PTFE seals:1.Material: NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE,and so on2.Application: trains,automobile,motocycles ... .According to customers' drawing,customized specifications are welcomed.7.Designing and manufacturing all of oil seals, gaskedts,o-rings ,and so on. Oil seal---PTFE seals