S6203-2RS Stainless Steel Sealed Ball Bearing 17mm x 40mm x 12mm S6203-2RS Stainless Steel, Sealed, radial, deep groove ball bearing, bearing is made of Stainless Steel and Stainless steel cage,S6203-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,bearing is sealed and self lubricated,S6203-2RS bearing is lubricated with grease.