GORO Idler is FS(complete seal, water and dust proof) type of Idlers. This bearings assenbly consists of high accurate bearing house, the high-quality Bearings, the special3-lips seal made of polyurethane, the circlip connecting with the bearing house and advanced grease. This bearings are widely used in many areas with the features of nice structure, high accuracy, complete seal, long life and reliable performance.