698-2RS Bearing, categorized as thick section, double sealed, radial and deep groove ball bearing,698-2RS bearing is made of Chrome Steel with Ceramic Balls (Si3N4) and Chrome steel cage,698-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,698-2RS bearings is sealed and self lubricated,the quality is set to EMQ (ABEC-5 quality) to ensure high speeds, 698-2RS bearing is lubricated with grease.