HomeMotion and ManipulationRotary FeedthroughsBellows Sealed ShaftISO KF / LF Feedthroughs

Rotary ISO Feedthrough Flanges

Rotary Feedthrough w/NW16 KF Flange

Rotary Feedthrough w/NW16 KF Flange

Part Number: 102140
High Vacuum, NW16 KF Flange, 360° (Degree) Rotary Feedthrough.
Motorized (Actuator) options are available. Click on this item to see details.
HTR-K40, High Temp. Rotary on a KF40 Flange

Rotary Feedthrough w/NW40 KF Flange

Part Number: 102150
High Vacuum, NW40 KF Flange, 360° (Degree) Rotary Feedthrough.
Motorized (Actuator) options are available. Click on this item to see details.
Speed Control Valve Kit

Speed Control Valve - Kit

Part Number: 112687

10-32 Pneumatic Actuator Speed Control Valve Kit

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Bellows Sealed Rotary Feedthroughs - ISO KF / LF Flange

Rotary Feedthrough Mounted on ISO Flanges

Click on individual products above to select options.

Rotary, Bellows Sealed

Accu-Glass Products high-torque HTR series rotary ISO feedthroughs are designed to operate at temperatures as high as 250°C and rotational torque up to 250 in-oz. They are constructed of black-anodized aluminum and stainless steel, where only stainless steel surfaces are exposed to the vacuum environment. In a vacuum, bearings are dry-film lubricated with tungsten-disulfide, while airside bearings are lubricated with high-temperature Krytox® lubricant. The rotation shaft is sealed with an AM-350 edge-welded bellows. Standard rotary feedthroughs are fitted with a 1.65 diameter manual actuator, which can be fitted with an optional three-spoke Speed-Handle for faster actuation. Factory-converted motorized solutions are also available on request. Our motor options include a reversible constant speed AC motor, two DC stepper motors, for medium and high torque applications respectively, and a 90° pneumatic actuator. Manual feedthrough rotation can be monitored via a 360° / 5° increment laser-etched scale found on the manual actuator knob. Rotary feedthroughs are available on Conflat® compatible CF style metal seal or ISO-KF elastomer seal flanges.


  • All precision bearings — no bushings
  • Improved shaft coupling design for high torque, rated to 250 in-oz
  • High temperature rated to 250°C
  • UHV compatible construction
  • Conflat® and ISO NW compatible mounts
  • Welded bellows seal
  • Manual actuator
  • Continuous rotary motion
  • Rotary position lock
  • Optional stepper motor or air actuator