Rotary Systems Union

Please explore our complete collection of Rotary Systems Union solutions engineered for air, water, steam, oil, coolant, and hydraulic applications. Whether you’re upgrading OEM machines or sourcing rotary joint replacements, find the right union for your system here.

Shop by Category

Single-Passage Rotary Unions – Ideal for coolant or compressed air.
Multi-Passage Rotary Unions – Designed for hydraulic and pneumatic circuits.
High-Speed Rotary Unions – For CNC spindles and automated machinery.
High-Temperature Rotary Unions – Withstand thermal cycling in steam or oil.
Custom Rotary Systems Union – Engineered-to-order sealing solutions.

Applications Across Industries

Automotive – Tire curing presses, robotic arms
Packaging – Filling machines, label applicators
CNC Machining – Coolant transfer, high-speed spindles
Paper & Printing – Dryer cylinders, ink delivery
Oil & Gas – Drilling equipment, coiled tubing reels
Food & Beverage – Bottle washers, rotary tables

Why Choose Our Rotary Systems Union Products?

Leak-Free Performance – Advanced seal technologies ensure minimal wear and zero leakage.
Versatile Media – Support Compatible with water, air, steam, oil, hydraulic fluid, and more.
Durable Build Materials – Stainless steel, carbon steel, aluminum, or brass options.
High-Speed Compatibility – Up to 20,000 RPM for precision motion systems.
Customization Available – We tailor unions to meet unique OEM or MRO needs.

Top-Selling Rotary Systems Unions

1. High-Pressure Rotary Union for Hydraulic Oil

Port Size: 1/2” NPT
Material: Nickel-plated carbon steel
Max Pressure: 4000 PSI
Features: Dual flow passages, replaceable seals

2. Rotary Union for Coolant Applications

Speed: Up to 15,000 RPM
Sealing: Mechanical seal with graphite-carbon face
Media: Coolant, water, light oil

3. Multi-Passage Rotary Union with Slip Ring

Channels: 4 hydraulic + electrical slip ring
Application: Packaging line robots

Compatible Media & Configurations

Water & Coolant– High-speed single-passage
Steam– High-temperature rotary unions
Hydraulic Oil– Multi-channel high-pressure
Vacuum– Low-torque mechanical seal
Air – PTFE-sealed aluminum unions

Explore by Specifications

Port Sizes: 1/8” to 3” NPT, BSP, or custom threads
Seal Types: Mechanical seals, lip seals, labyrinth seals
Passages: 1 to 12 independent flow paths
RPM Range: 0 – 20,000 RPM
Pressure Range: Up to 7,000 PSI

Custom Rotary Systems Unions

Need a tailored rotary joint? We offer:
Design consultation for OEMs
CAD drawing & prototyping
Custom shaft sizes, port configurations
Fast lead time for urgent MRO needs

FAQs about Rotary Systems Union

Q1: What is a Rotary Systems Union used for?

A: It’s a mechanical device that transfers fluid or air from a stationary input into a rotating part without leakage or pressure loss.

Q2: Can I use one union for both air and hydraulic fluid?

A: Multi-passage unions can handle different media types simultaneously, provided seals are compatible.

Q3: How do I select the right rotary union?

A: Consider media type, pressure, speed, number of flow paths, and environmental conditions. Or contact us for expert advice.

🚀 Fast Shipping

We stock hundreds of models ready for immediate shipment worldwide. Trusted by OEMs, integrators, and repair shops across North America, Europe, and Asia.

  • Sale! 1690-000-105

    Deublin 1690 000 105 Rotary Union Alternative | High-Speed Air Rotary Joint Manufacturer

    Original price was: $350.00.Current price is: $320.00.
    • Max Pressure (Air): 150 PSI
    • Max Pressure (Hydraulic Oil): 3000 PSI
    • Max Flow Rate (Air): Up to 40 CFM (1132 L/min)
    • Max Speed: Up to 3000 RPM
    • Rotor Connection: 1″-11 G RH
    • Housing Connection: 1/4″-18 NPT
    • Operating Temperature: Up to 250°F (121°C)
  • Sale! 4 passage rotary union4 Passage Rotary Union

    High Performance Replacement Solution for Deublin Type 4 Passage Rotary Unions

    Original price was: $220.00.Current price is: $201.00.
    • Customized support: OEM, ODM, OBM
    • Max. Hydraulic Pressure: 7,000 PSI
    • Max. Air Pressure: 250 PSI
    • Max. Vacuum Pressure: 28″ Hg
    • Max. Temperature: 225° F
  • Sale! Marine Rotary UnionMarine Rotary Union

    Heavy-Duty Marine Rotary Union for Offshore & Shipboard Hydraulic Systems

    Original price was: $130.00.Current price is: $118.00.
    • Operating Pressure: Up to 300 bar (depending on model)
    • Temperature Range: -40°C to +200°C
    • Rotation Speed: Maximum rotational speed up to 5000 RPM
    • Media Compatibility: Suitable for water, oil, air, steam, and hydraulic fluids
    • Connection Options: Various thread types and flange connections available
  • Sale! multiple passage rotary unionmultiple passage rotary union

    Customizable Multi Passage Rotary Union for Diverse Industries

    Original price was: $90.00.Current price is: $80.00.
    • Maximum Passages:Up to 24
    • Maximum Pressure:Up to 400 bar (5800 PSI)
    • Maximum Rotational Speed: Up to 500 RPM
    • Fluid Compatibility: Water, air, hydraulic oil, coolant
    • Size Range: Customizable to fit specific needs
    • Temperature Range: -20°C to 120°C
  • Sale! Rotary Union for Water

    Rotary Union for Water

    Original price was: $50.00.Current price is: $40.00.
    • Product name:Water rotary joints
    • Material:Stainless Steel Brass
    • Pipe Clamp Size:10/15
    • Max.Speed:1000RPM
    • Max. Pressure:1.6MPa
    • Max.Temperature:100℃
    • Applicable Medium:Water, Water heating
  • Sale! Pneumatic Swivel JointPneumatic Rotary Joint

    Industrial Pneumatic Swivel Union – Leak-Free Rotating Air Joints

    Original price was: $35.00.Current price is: $31.00.
    • Material: Corrosion-resistant stainless steel
    • Rotational Speed: High-speed options available
    • Pressure Rating: Suitable for high-pressure systems
    • Temperature Range : -50°C to +260°C
    • Port Sizes Available : G1/8″, G1/4″, M5, G3/8″
    • Pipe Sizes Supported: 4mm, 6mm, 8mm, 10mm, 12mm
  • Sale! Air Rotary JointAir Rotary Joint

    Reliable Air Rotary Joints for Continuous Rotation Applications

    Original price was: $50.00.Current price is: $30.00.
    • Max Pressure: Up to 10 bar (145 psi)
    • Max Temperature: Up to 80°C (176°F)
    • Rotational Speed: Up to 3,500 rpm
    • Materials: Nickel-Plated Steel, Carbon Graphite Seals
    • Seal Type: Balanced Mechanical Seals
  • Sale! High Speed Pneumatic Rotary UnionHigh Speed Pneumatic Rotary Union

    High Speed Pneumatic Rotary Union for Industrial Systems

    Original price was: $35.00.Current price is: $30.00.
    • Max Pressure: Up to 10 bar (145 psi)
    • Max Temperature: Up to 80°C (176°F)
    • Rotational Speed: Up to 3,000 RPM
    • Materials: Stainless Steel, Carbon Graphite Seals
    • Seal Type: Balanced Mechanical Seals
  • Sale! Hot Oil Rotary Union

    Hot Oil Rotary Union for Corrugated Cardboard Production Lines

    Original price was: $30.00.Current price is: $26.00.
    • Max Pressure: Up to 50 bar (725 psi)
    • Max Temperature: Up to 300°C (572°F)
    • Rotational Speed: Up to 500 rpm
    • Materials Carbon: Graphite, Stainless Steel
    • Seal Type: Balanced Mechanical Seals
  • Sale! 90 Degree Rotary Union90 Degree Rotary Union

    Hydraulic High Pressure Right Angle 90 Degree Rotary Union

    Original price was: $30.00.Current price is: $26.00.
    • Material: Stainless steel
    • Size: All kinds of models and sizes can be customized.
    • Max.Speed: ≤200RPM;
    • Max. Pressure: ≤35Mpa;
    • Max. Temperature: ≤121℃;
    • Applicable medium: Hydraulic oil, water, gas, organic solvent.
  • Sale! Water Cooling Rotary Union

    New Compact Water Cooling Rotary Unions Manufacturers

    Original price was: $20.00.Current price is: $15.00.
    • Connection:Coupling, Fixed Internal Pipe
    • Product name: New Compact Water Cooling Rotary Union
    • Max temperature: -20°-200°
    • Media: Water
    • Speed: 0-1000R/min
    • Pressure: 1MPa
    • Application: Iron industry , big machine
    • Connection thread sizes: metric imperial,1.2 American-made 3 minus 1, 1.5, 2,2.5, 3 inches
    • Size: 3/4″
    • Thread: BS 2779:1986
    • Usage: Convey Water
  • Sale! steam rotary union

    Steam Rotary Union for Paper Mills and Industrial Heating Systems

    Original price was: $20.00.Current price is: $15.00.
    • Size: All kinds of models and sizes
    • Max.Speed: ≤300RPM
    • Max. Pressure: ≤1.8MPA
    • Max. Temperature: ≤220℃
    • Applicable medium: Saturated steam, hot oil, superheated water, superheated st
  • Sale! high temperature rotary unions

    Q Style High Temperature Rotary Unions

    Original price was: $15.00.Current price is: $13.00.
    • Product name:Q Style High Temperature Rotating Joint
    • Material:iron
    • Pipe Clamp Size:32\40150
    • Max.Speed:100RPM
    • Max.Pressure:1.8MPa
    • Max. Temperature:220°C
    • Applicable Medium:Hot Oil, Steam