... 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 ... (604zz-609zz) 4. Deep groove ball bearing with seal ring in one side (604RS-609RS) ... -2RS)Feature Deep groove ball bearing usually with simple and easy structure, so it is ... : 1, opening style; 2, with iron seal; 3, with rubber seal; 4, with snap groove