The ferrofluid is connected by double flanges. When the drive shaft is inserted into the bushing, the two O rings in the sleeve can compress the drive shaft, and the two form a static seal. The rotation of the drive shaft drives the shaft sleeve to rotate together, so as to solve the problem of vacuum sealing of the drive shaft. To prevent the shaft from slipping, the clamp at the end of the sleeve needs to be locked on the shaft.
It is suitable for vacuum sealing at medium and low speed in room temperature environment.