This is a 0.25" solid shaft Ferrotec Ferrofluidic seal feedthrough model Model SS-250-SLBE,PN:107519. The SS-250-SLBE vacuum rotary feedthrough features a solid shaft with 1.62" nut-mounted flange diameter, 1" threaded body that is 1.13" thread length. The flange thickness is 0.25", the recommended mounting bore is 1.025". It has a shaft torque capacity of 15.5 in-lb, starting torque at 100 rpm is 0.19 in-oz, and a running torque of 0.11in-oz.
Full dimensional details are specified below. This vacuum seal is also water-cooled for high-temperature applications. The SS-250-SLBE vacuum rotary feedthrough uses Ferrotec’s standard hydrocarbon-based ferrofluid, specifically optimized for introducing rotary motion with a magnetic liquid hermetic seal in most Standard environments.For precision measurement specifications, refer to the Spec Control Drawing.