1. EPDM,Silicon,FPM,NBR... 2, Various of type eg:TC, TB, SC,SB... 3, ... ,ozone-resistan 4. Color: Black, red, green, etc NBR rubber oil seal 1.Material: NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE,and so ... all of oil seals, gaskedts,o-rings ,and so on. NBR rubber oil seal