Plain Linear Bearing - Round Flanged SFPMR25 25mm Precision IDRound flanged plain linear bearing with a 25mm ID, a precision round shaft running clearance, and a standard size aluminum housing featuring a self lubricating Simplicity FrelonGOLD liner bonded directly to the bore of the housing. Unlike recirculating ball bearings, the FrelonGOLD sliding surface has no rolling elements to jam, seize, or contaminate, making it well suited for harsh conditions involving extreme heat, dirt, vibration, shock, or