... QUALITY STAMPING,CR27394 BEARING SEALS,MATERIAL :NBR, TYPE:VHY, National Oil Seal(CR27394)Applies in the knuckle bearing, the sliding bearing ... , the self lubricatingbearing, the dry type bearing, and other rubber series packing collar and so on.miniature bearing Material: NBR, FKM ... specially request and the material qualityaccording to the visitor National Oil Seal