GP-301-10, 10-Passage Rotary Union, 3/8"-18 NPT Connections, Carbon Steel

GP-301-10, 10-Passage Rotary Union, 3/8"-18 NPT Connections, Carbon Steel
Product Code:
  • GP-301-10-R.A
General purpose, 10-flow passage, through-bore rotary union with 3/8"-18 NPT connections and carbon steel (black oxide) construction

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Additional Information

Additional Information

Downloads GP Series Catalog PDF Drawing DWG [2D] STEP [3D]
Number of Passages 10
Connection Type 3/8"-18 NPT
Max. Pressure 7,500 PSI [515 BAR]
Max. Speed 500 RPM
Media Type Air/Gas, Coolant, Oil/Hydraulic, Water/Glycol
Performance Charts Pressure vs. Speed Data
Material Type Carbon Steel
Diameter 3.937" [100 mm]
Length 13.620" [345.949 mm]
Through Bore 0.750" [19.05 mm]
Min. Torque 23.3 ft-lbs [31.59 Nm]
Product Disclaimer Suitable Water/Glycol or Coolant media must have rust inhibitors present. Oil/Hydraulic media must be petroleum-based. Please consult with DSTI for approval.

Values listed are dependent on a combination of all application parameters. Please note operational life is dependent upon both rotational speed and duty cycle. Contact DSTI if your application requires operating close to the maximum rotational speed with a continuous duty cycle.

Applications with temperatures above 220° F (105° C) require alternative seal materials. Please consult with DSTI regarding your specific application requirements.

Value listed for the minimum torque required to rotate is based on zero pressure with oil/hydraulic media. Required torque to rotate may be greater when using other media types or dry running. For specific torque requirements, please contact DSTI to discuss your application.


The 10-passage, GP Series rotary unions for general-purpose use, feature specialized sealing technology suitable for vacuum and bidirectional pressures and independent flow passages capable of transferring different media types simultaneously. The carbon steel (black oxide) construction is best used for hydraulic and pneumatic service, in addition to water/glycol and coolant when rust inhibitors are present.

For more information, see GP Series 10-Passage Rotary Unions.