1.rubber o ring ,X ring,Y ring ,rubber seal for auto 2.color:black,red,green.. 3.material: NBR,VITON,SILICON 4.OEM quality rubber o ring ,X ring,Y ring ,rubber seal ,rubber ring ,seal,bone oil seal,valve seal,ptfe seal,shaft seal,bearing seal.color:black,red,black,green..material: NBRhardness:shore A 75 Colorful Rubber O ring seal