... Ball Bearing 1, opening style; 2, with iron seal; 3, with rubber seal; 4, with snap groove SKF Deep Groove Ball Bearing1 ... , opening style; 2, with iron seal; 3, with rubber seal; 4, with snap groovewe can offer both chrome steel ... one side (604RS-609RS) 5. Deep groove ball bearing with seal rings on both two sides (604-2RS-609-2RS)Feature Deep ...