Product Details
Series RU028

Low Torque Air Rotary Union

Rotary Systems' low torque air rotary unions are designed for low speed air and vacuum applications. This economical rotary union uses a hardened and ground shaft, o-ring seals and dual ball bearings. This rotary union is available in two, four, six, and eight passages.

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Max. Air Pressure220 PSI
Max. Vacuum Pressure28" Hg
Max. Temperature150° F

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Speed vs. Pressure

rotary union ru028 speed vs. pressure chart tall


  • Material
    Choose based on application. Hastelloy and Super-Duplex Stainless available.

  • Slip Rings
    Pass power, signal, and data with 24" long leads up to 10 amps per circuit.

  • Threads
    All common thread types available.


Part #Number of PortsA ThreadB LengthC Diameter
Part #10050-2802-000Number of Ports2A Thread0.125 NPTB Length3.047C Diameter2.450 Download Drawing
Part #10050-2804-000Number of Ports4A Thread0.125 NPTB Length3.839C Diameter2.450 Download Drawing
Part #10050-2806-000Number of Ports6A Thread0.125 NPTB Length4.630C Diameter2.450 Download Drawing
Part #10050-2808-000Number of Ports8A Thread0.125 NPTB Length5.423C Diameter2.450 Download Drawing

If you are interested in seeing drawings for multiple parts, please contact us. We can help you find products that meet your needs and can send you multiple prints.