... . 3.material: NBR , Silicon, VITON, PU ,and others . 1.item: oil seal .2.model :TC ,TB,TA ,DC,SC,SB &others.3 ... , PU ,and others .4.color :black ,red ,brown, and others .5.brand : according to clients' requirements .6.size : common sizes& special ... design and produce according to clients' samples or drawing pictures. Oil seal