2015-07-13HS12W 12mm solid spindle magnetic fluid feedthrogh with water cooling 2015-07-26Nut fixing magnetic fluid feedthrough for replacement 2015-08-056mm-20mm Spindle throughole solid shaft ferrofluid rotary feedthrough 2017-01-106MM Solid Shaft Thread Nut Type Mounting Ferrofluid Feedthrough 2017-02-07Ferrofluid Feedthrough SS-188-SLES Ferrotec Part Number 103073