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Rotary Union and Rotary Joint Applications
Need a rotary union or rotary joint to transfer water, air, steam, oil, coolant, hydraulic fluid, chemicals, gas or vacuum into rotating equipment?
Ashish Seals India manufactures and supplies rotary unions and rotary joints selected according to the medium, pressure, temperature, rotational speed, connection, flow requirement, number of passages and mounting arrangement.
Choose the media application below or send the machine drawing and operating details for selection and quotation.
Find Rotary Unions and Rotary Joints by Media
Pick the transferred medium below to see the details we'll need for an accurate rotary union or rotary joint recommendation.
Rotary Unions & Rotary Joints for Water
Cooling and temperature-control systems. Selected by pressure, temperature, RPM, flow and connection.
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Rotary Unions & Rotary Joints for Air and Pneumatic Service
Pneumatic clutches, brakes and rotating fixtures. Selected by pressure, RPM, passages and duty cycle.
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Rotary Unions & Rotary Joints for Steam and Condensate
Heating rolls, cylinders and process equipment. Selected by pressure, temperature, condensate return and RPM.
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Rotary Unions & Rotary Joints for Oil
Lubrication and oil-transfer duty. Selected by oil grade, viscosity, pressure, temperature and RPM.
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Rotary Unions & Rotary Joints for Hot and Thermal Oil
Industrial heating and heat-transfer duty. Selected by temperature, pressure, thermal cycle and RPM.
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Rotary Unions & Rotary Joints for Hydraulic Oil and Fluids
Hydraulic clamping and rotating machinery. Selected by fluid, pressure, passages, RPM and connection.
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Rotary Unions & Rotary Joints for Coolants
Machine tools, spindles and cooling systems. Selected by coolant, filtration, pressure, RPM and flow.
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Rotary Unions & Rotary Joints for Chemicals
Chemical transfer in rotating equipment. Selected by chemical, concentration, pressure and temperature.
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Rotary Unions & Rotary Joints for Gases
Industrial gas transfer. Selected by gas, pressure, temperature, RPM and leakage limit.
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Rotary Unions & Rotary Joints for Vacuum Service
Vacuum transfer in rotating assemblies. Selected by vacuum level, RPM, connection and leakage limit.
View Details →Rotary Unions & Rotary Joints for Hose Reels
Fluid transfer through rotating hose reels. Selected by medium, hose size, pressure and mounting.
View Details →Rotary Unions & Rotary Joints for Slurries
Solids-bearing fluid transfer. Selected by solids, particle size, pressure, RPM and flushing.
View Details →Information Required to Select a Rotary Union or Rotary Joint
Rotary unions should be selected for the actual medium and motion. A connection size alone does not confirm pressure, temperature, speed or passage requirements.
| Selection Detail | Information to Provide |
|---|---|
| Transferred medium | Water, air, steam, oil, coolant, hydraulic fluid, chemical, gas or vacuum |
| Operating conditions | Working and maximum pressure and temperature |
| Rotation | RPM, direction, duty cycle and oscillation angle |
| Flow requirement | Required flow and pressure drop |
| Passages | Single, dual or multiple passages |
| Connections | Thread, flange, rotor and housing dimensions |
| Installation | Mounting arrangement and available space |
| Existing unit | Model, drawing, sample and leakage history |
Standard, Multi-Passage, Custom and Replacement Rotary Unions
Standard Rotary Unions
Standard rotary unions can be reviewed for common water, air, oil, hydraulic, coolant and steam duties after pressure, temperature and speed are confirmed.
Custom Units
Custom units can be evaluated for multiple passages, special mounting, limited space, elevated pressure or temperature and OEM integration.
Replacement Requirements
For replacement requirements, send the old unit, nameplate, mounting dimensions and actual medium. Different media should not be treated as interchangeable without review.
Why Choose Ashish Seals India?
Selection by medium, pressure, temperature and operating duty
Water, air, steam, oil, hydraulic, coolant and vacuum applications
Single, dual and multi-passage requirements
Custom mounting, connection and OEM integration
Replacement review using drawings, models or old samples
Pressure, temperature, RPM and flow review
Manufacturing and supply from Mumbai, India
ISO 9001:2015 certified manufacturing and quality process
Frequently Asked Questions
What is the difference between a rotary union and a rotary joint?
Both terms commonly describe media transfer between stationary piping and rotating equipment; usage varies by industry.
How do I select a rotary union?
Provide the medium, pressure, temperature, RPM, flow, passages, connections and mounting.
Can one rotary union be used for water, air and oil?
No. The seals and internal design must match the selected medium and duty.
Do you supply rotary unions for steam and hot oil?
Provide maximum pressure, temperature, speed and connection details for steam or thermal-oil duty.
Can you supply a multi-passage rotary union?
Provide the independent circuits, media, pressures, flows, speed and available space.
Can you manufacture a replacement from an old rotary joint?
Yes. Send the sample, connection dimensions, medium, pressure, temperature and speed.
What details are required for a rotary union price?
Price depends on media, passages, size, pressure, temperature, speed, materials and quantity.
Do you support OEM machine manufacturers?
OEM requirements can be reviewed from the assembly drawing and forecast quantity.
Request a Rotary Union or Rotary Joint Quote
Send the medium, pressure, temperature, RPM, flow, number of passages, connection dimensions and existing unit photographs. Ashish Seals India will review a suitable standard, custom or replacement rotary union.