S608-2RS Ball Bearing with Ceramic Balls with Rubber sealed and Nylon retainer inside them there are Zirconia fibers 7 Ceramic balls, 7 balls are made of Ceramic Zirconia fibers, each bearing has 2 Rubber seal to protect the bearing from dust or any possible contamination, this is self lubricated bearing.

• Item: S608-2RS Ball Bearing
• Type: Deep groove ball bearings
• Cage: Nylon high speed balls retainer
• Balls: 7 Zirconia Oxide Ceramic balls
• Closures: Seals
• Bearing Size: 8mm x 22mm x 7mm
• Quantity: One Bearing