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Standard Feedthrough Common Specifications

Some of Ferrotec’s Ferrofluidic® seal specifications are common to the majority of our feedthroughs.

Temperature Range (Uncooled)
20 – 210°F
(-6 – 80°C)
Water cooled units may exceed these temperatures. Most units are bakeable to 150°C.
Vacuum Pressure
10-9 Torr
Estimated Value. Actual performance will depend on system pumping speed and other gas loads.
Leakage Rate
10-11 Std cc He/s
Units not regularly tested to this level as it is beyond the capability of common vacuum equipment.
Gas compatibility
inert gas
For sealing in reactive environments, a flourocarbon-based ferrofluid may be required.
Housing Material
300 series stainless steel
ISO 1.4301 or similar
Shaft Material
400 series stainless steel or
17-4 PH
ISO 1.4000 or similar
ISO 1.4542 or similar
Maximum shaft run-out
0.003"/0.076mm