... of O-ring,E-type,U-type,etc,can make on you size3.Different sizes of Oil Seal,Rubber Seal, Rubber ... ,O-Ring,etc4.You could option the color you like on the Oil O-Ring,Oil seal,Rubber Seal,Rubber Gasket ... :Black,red,white,yellow,brown,green,vioet,etc,depending on you own order.5.Your OEM order of Oil seal ...