Rotary Unions

Rotary Union

Rotary Union is a fluid dynamic sealing device that transports fluid media (such as liquids, gases, steam, etc.) from fixed pipelines to rotating or swinging pipelines and equipment at a certain angle. Its core function is to ensure continuous transmission of the medium while preventing medium leakage, series connection, or external pollution, achieving a closed connection under 360 ° unrestricted rotation.

Rotary Union
Precision Rotary Joints & Unions for Industrial Fluid Transfer

Choose any application — steam, water, oil, air, or chemical — and we’ll engineer the perfect rotary joint solution for you.

Below are our most trusted rotary joint series, available for standard or custom-engineered orders. As a manufacturer specializing in precision rotary sealing technology, SD SWIVELES Engineering Co., Ltd. brings together a dedicated team of certified mechanical engineers, application specialists, and production experts, each with decades of hands-on experience in the R&D of fluid transfer systems for paper, steel, rubber, plastic, and chemical processing industries.

Cooling water swivel unions

Cooling water swivel unions

Designed for assemblies that require smooth rotation and dependable connection performance, the a10-1772-05l swivel union helps reduce hose stress, simplify installation, and support consistent fluid or air transfer in compatible systems

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A10-1772-05L swivel unions

A10-1772-05L swivel unions

the a10-1772-05l swivel union helps reduce hose stress, simplify installation, and support consistent fluid or air transfer in compatible systems

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1121-948-954 swivel unions

1121-948-954 swivel unions

1121-948-954 rotary joint is a specific model of bearingless high-speed center outlet rotary joint, dedicated to the internal cooling system of machine tool spindles, supporting extremely high speeds and high-pressure coolant transmission. ‌‌

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Reverse wire rotary joint of pipe reel

Reverse wire rotary joint of pipe reel

The reverse thread high-speed rotary joint of the pipe reel is a high-speed rotating sealing connector in the pipe reel system that uses a "reverse thread (left-hand) threaded interface", specifically designed to prevent the joint from loosening due to rotation during the process of hose retraction.

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high speed swivel union

high speed swivel union

High speed rotary joints, whose "high-speed type" mainly refers to high-speed rotary joints that are suitable for CNC spindle center water/coolant transmission. Typical representatives include the G2008RUL series, which can reach a maximum speed of 8000-12000rpm and is dedicated to the internal cooling system of machining center spindles

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B10-1717-05L swivel unions

B10-1717-05L swivel unions

B10-1717-05L is a B-series high-speed, dry running rotary joint designed specifically for machine tool spindle coolant/air transmission. It supports automatic separation and wear prevention of the sealing surface when there is no flow. ‌‌

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57-000-094 swivel unions

57-000-094 swivel unions

57-000-094 is a 57 series single channel self-supporting rotary joint designed for sealed transmission of media such as water, steam, and hot oil in rotating equipment. Its core features include forged copper shell+stainless steel rotor, E.L.S. long-life seal, lifetime lubricated bearing, and three leakage hole monitoring structure. ‌‌

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1005-000-049 swivel unions

1005-000-049 swivel unions

1005-000-049 rotary joint is a shaft mounted multi-path rotary joint designed specifically for air and hydraulic oil media. It adopts a 1/4 "BSP right-hand threaded interface and is suitable for heavy machinery hydraulic systems installed in narrow spaces. ‌‌

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1005-020-019 swivel unions

1005-020-019 swivel unions

The 1005-020-019 rotary joint is a 1005 series single channel high-speed rotary joint, designed with a balanced mechanical seal for stable transmission of hydraulic oil/coolant and other media at high speeds. ‌‌

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1005-042-448 swivel unions

1005-042-448 swivel unions

The 1005-042-448 rotary joint is the specific specification and model of the 1005 series single channel rotary joint, designed specifically for high-speed machine tool spindle center water/coolant delivery. It adopts a balanced mechanical seal and bearing supported rotor structure, suitable for MQL (micro lubrication) or coolant working conditions. ‌‌

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1108-019-217 swivel unions

1108-019-217 swivel unions

1108-019-217 rotary joint is a single pass rotary joint model, designed for the transmission of water/coolant media in medium and low-speed rotating equipment (such as machine tool spindle center water outlet, roller cooling), using NPT right-hand thread connection,

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Why SD-SWIVELES

Precision Rotary Joints · Quality Driven Innovation

From precision machining to seal testing, every step follows international standards (ISO 9001, CE, ATEX) — delivering reliable fluid transfer solutions for paper, steel, chemical, rubber, and plastics industries.

Precision Machining · Micron Tolerances

High-precision CNC machining centers with micron-level tolerances ensure rotational stability and seal integrity, even at high speeds and demanding operating conditions.

High-Performance Materials · Corrosion Resistant

316L stainless steel, alloy steels, silicon carbide, and carbon graphite — selected for maximum corrosion resistance, wear resistance, and compatibility with steam, hot oil, water, and air.

Advanced Sealing · Low Leakage · Long Life

Balanced seal design with silicon carbide/graphite seal rings delivers ultra-low leakage rates under high-temperature and high-pressure conditions, ensuring extended service life and reduced maintenance.

Engineering Experts · Custom Solutions

20+ years of rotary joint engineering experience — offering customized design, sizing guidance, material selection, and on-site technical support for your specific application.

Production Excellence

Production Excellence & Quality Assurance

SDSWIVELES integrates 20 years of engineering experience with German-inspired quality management systems to form a standardized production process for precision rotary joints.

Standardized Production Process

Every rotary joint undergoes a documented manufacturing sequence: precision CNC machining, seal face lapping, assembly, and final inspection. Each unit is traceable with individual quality records and serialized documentation.

Independent Quality Inspection

Our quality department operates with full independence and authority to halt production if standards are not met. Dimensional tolerances are verified to ±0.01mm, and all units are pressure-tested to 1.5x working pressure before shipment.

Batch Consistency & Reliability

Triple validation: "dimensional reports + material certifications + performance test records." Product qualification rates remain stable above 99%, eliminating performance variations and ensuring long-term operational reliability.

Tailored Solutions

Solutions for Every Industry & Application

In the dynamic world of industrial manufacturing, every operation faces unique challenges. At SDSWIVELES, we tailor our engineering expertise to empower your success.

Established Manufacturers

We help you optimize existing equipment with upgraded rotary joint solutions that reduce downtime, improve energy efficiency, and lower maintenance costs. Whether you need to replace aging components, enhance performance while meeting stricter industry standards, or adapt to evolving production demands — we deliver solutions that keep your operations running.

OEM & Machine Builders

Stand out in a competitive market with custom-engineered rotary joint solutions that integrate seamlessly with your equipment designs. We support custom connection configurations, material specifications, compact form factors, and performance validation — helping you deliver reliable machinery to your customers.

Startups & New Ventures

Turn your engineering concept into reliable, production-ready hardware with our end-to-end partnership. From application analysis, material selection, prototyping, manufacturing oversight, to compliance testing — we guide you through every step of your journey from idea to implementation.

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