The ferrofluid is connected by flanges. When the drive shaft is inserted into the bushing, two O-rings in the sleeve can compress the drive shaft, and the two form a static seal. The rotation of the drive shaft can drive the shaft sleeve to rotate together, and in order to prevent the drive shaft from slipping, the clamp at the end of the shaft sleeve needs to lock the shaft.
It is suitable for vacuum sealing at medium and low speed in high temperature environments.