1.item: oil seal . 2.model :TC ,TB,TA ,DC,SC,SB &others. 3.material: NBR , Silicon, VITON, PU ,and others . 1. ... item: oil seal .2.model :TC ,TB,TA ,DC,SC,SB ... &others.3.material: NBR , Silicon, VITON, PU ,and others .4 ... and produce according to clients' samples or drawing pictures. Oil seal