Premium Hydraulic Rotary Unions in 316 Stainless Steel

Description

Product Overview： Stainless Steel Hydraulic Rotary Union

Our Stainless Steel Hydraulic Rotary Union is a high-precision fluid coupling device designed to transfer hydraulic oil or other media between stationary and rotating parts. Its precision engineering ensures leak-free operation and long-lasting performance, making it an essential component for hydraulic, pneumatic, and coolant systems. Featuring robust stainless steel construction, this Stainless Steel Hydraulic Rotary Union excels in harsh industrial environments where corrosion, high pressure, and temperature extremes are common. Built from marine-grade 316 stainless steel, it offers exceptional resistance to corrosion, making it ideal for demanding applications in marine environments, offshore drilling, food-grade processing, and high-pressure industrial systems.

This hydraulic swivel connector ensures leak-free performance, even under extreme rotational speeds and pressure fluctuations. Whether you’re upgrading OEM machinery or designing a custom hydraulic system, this union provides the reliable rotation and sealing you need.

Key Features of Stainless Steel Hydraulic Rotary Union

Premium Stainless Steel Construction

Built with high-grade stainless steel (such as SS304 or SS316), offering exceptional corrosion resistance and durability for industrial environments.

High Pressure & Temperature Capability

Handles pressures up to 7,500 PSI (515 BAR) and temperatures up to 220°C (428°F), making it suitable for demanding hydraulic and pneumatic applications.

Multi-Media Compatibility

Designed to transfer various media, including hydraulic oil, water, compressed air, coolant, and chemicals, ensuring versatility across industries.

Multiple Passages

Available in single, dual, or multi-passage configurations for simultaneous transfer of different fluids or gases without cross-contamination.

Precision Sealing Technology

Advanced sealing systems prevent leaks, support vacuum and bidirectional pressures, and extend operational life.

Wide Range of Sizes

Offered in sizes from 1/8″ to 4″ NPT or custom threads, fitting most industrial setups.

High Rotational Speed

Supports speeds up to 500 RPM, suitable for both low-speed and high-speed rotary applications.

Easy Installation

Threaded or O-ring face seal connections for quick, secure mounting and maintenance.

Custom Solutions Available

Tailored designs and modifications to meet unique application requirements.

About Us

We are a leading manufacturer and supplier of industrial rotary unions, specializing in stainless steel hydraulic rotary joints for demanding applications worldwide. Our engineering team is dedicated to innovation, quality, and customer satisfaction, offering both standard and custom solutions to meet your needs.

Applications

1. Offshore and Marine Systems

Designed to handle saltwater exposure, high loads, and continuous rotation in offshore cranes, winches, and ROVs.

2. Industrial Hydraulic Equipment

Perfect for high-pressure rotary actuators, machine tools, and mobile hydraulic systems operating in rugged environments.

3. Food and Beverage Processing

Our stainless-steel housing meets FDA and EHEDG cleanliness standards for transferring cooking oil, dairy, or cleaning fluids in sanitary operations.

4. Renewable Energy

Used in wind turbine pitch control systems and hydraulic braking systems where longevity and leak-free performance are critical.

5. Construction and Mining Machinery

Works reliably in earth movers, tunneling machines, and drilling rigs exposed to dust, mud, and high vibration.

Why Choose Our Stainless Steel Rotary Unions?

Over 20 Years of Rotary Sealing Experience

With over two decades of expertise in rotary sealing technology, we understand the complex requirements of fluid transfer systems across industries. Our deep engineering knowledge enables us to design and manufacture rotary unions that meet the highest standards of precision, safety, and durability. From prototyping to mass production, we deliver consistent quality backed by real-world performance data.

In-Stock Options for Fast Shipping

We maintain a large inventory of standard stainless steel hydraulic rotary unions, ready for immediate dispatch. This ensures minimal lead time, helping customers avoid costly production delays. Whether you need a single unit or a batch of 100, we can ship quickly to meet tight deadlines.

Competitive Pricing for OEM & Bulk Orders

By streamlining our manufacturing processes and sourcing high-quality materials in bulk, we’re able to offer highly competitive pricing —without compromising on performance. OEM customers benefit from volume discounts, flexible payment terms, and long-term supply agreements. Our pricing structure is ideal for resellers, system integrators, and equipment manufacturers looking to scale.

Engineering Support & Custom Solutions

Our in-house engineering team works closely with clients to develop custom rotary unions tailored to their application requirements. From selecting optimal sealing materials to designing multi-passage layouts or specialty mounting options, we offer technical support at every stage. Whether you’re in R&D or mass production, our team ensures your solution performs exactly as needed.

Trusted by Fortune 500 Manufacturers Worldwide

Leading global companies across the automotive, aerospace, marine, and heavy machinery sectors rely on our rotary unions for mission-critical applications. Our reputation for quality, reliability, and responsive service has made us a long-term partner to some of the world’s most respected brands. When you choose our product, you’re choosing a solution trusted by industry leaders.

FAQs

Q1: What is a hydraulic rotary union used for?

A: It enables the transfer of hydraulic fluid, air, water, or other media between stationary and rotating parts of machinery without leaks or pressure loss.

Q2: How do I select the right rotary union?

A: Consider the number of passages, media type, pressure, temperature, speed, and connection size. Custom solutions are available for unique requirements.

Q3: Is the stainless steel rotary union suitable for corrosive environments?

A: Yes, stainless steel construction ensures superior corrosion resistance, making it ideal for marine, chemical, and food processing applications.

Q4: Can one rotary union handle multiple fluids at once?

A: Multi-passage rotary unions allow simultaneous transfer of different fluids or gases without cross-contamination.

Q5: What maintenance is required?

A: Minimal maintenance is needed due to advanced sealing technology and durable construction. Regular inspection is recommended for optimal performance.

Order Now

Upgrade your machinery with a Stainless Steel Hydraulic Rotary Union for reliable, efficient, and safe fluid transfer. Available in multiple sizes and configurations – contact us for custom orders or technical support.