rotary joints

Rotary Joint

swivel union is a fluid dynamic sealing device that transports fluid medium from a fixed pipeline to a pipeline or equipment that rotates or swings at a certain angle. Its core function is to establish a reliable connection between the stationary supply channel and the dynamically rotating components, achieving 360° continuous and leak-free transmission of various media such as gas, liquid, and oil

Rotary Joint
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.

HS-G rotary joint

HS-G rotary joint

HS-G rotary joint is a bidirectional inner tube fixed high-speed cooling water rotary joint, which adopts a balanced seal and rolling bearing support structure

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Hydraulic rotary union

Hydraulic rotary union

Hydraulic rotary joint is the core sealing component that connects fixed pipelines and rotating equipment. It can stably transmit hydraulic medium in a 360 ° continuous rotation state, avoiding pipeline entanglement and knotting. It is a key device for dynamic oil supply in hydraulic systems.

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rxb type swivel union

rxb type swivel union

The RXB rotary joint is a high-frequency universal mechanical seal device designed specifically for the pharmaceutical, lithium battery, semiconductor, and photovoltaic industries, supporting online sealing and intermittent dry operation. ‌‌

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High temperature thermal oil swivel union

High temperature thermal oil swivel union

SK type high-temperature heat transfer oil rotary joint is a spherical sealed mechanical connection device designed specifically for heat transfer oil media. The core adopts dual carbon graphite oil-free bearings with automatic centering and convex spherical multi spring compensation sealing structure

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90 degree flange swivel union

90 degree flange swivel union

A 90 degree flange elbow is a detachable metal pipe fitting with a flange connection structure at both ends, used for pipeline systems to achieve a 90 degree turn, with both flow direction change and convenient disassembly and assembly functions. ‌‌

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HS-G type rotary joint

HS-G type rotary joint

HS-G type rotary joint is an industrial dynamic sealing device with bi-directional flow, fixed inner pipe, and threaded connection, designed to efficiently transport fluids (water, air, saline water, etc.) from fixed pipes to rotating rollers and reflux

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Bend rotary joint

Bend rotary joint

The elbow rotary joint is a pipeline connection device that combines flow direction change (elbow function) and relative rotation sealing transmission (rotary joint function), used to transport fluid from a fixed pipeline without leakage to the equipment end that needs to swing or rotate. ‌‌

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High temperature swivel union

High temperature swivel union

High temperature rotary joint is a dynamic sealing connection device designed for transporting fluid media from static pipelines to rotating equipment without leakage under high temperature conditions of 300 ℃ -450 ℃. The core of this device lies in high-temperature resistant sealing materials and thermal compensation structures.

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Flange stainless steel rotary joints

Flange stainless steel rotary joints

The flange stainless steel rotary joint is a specialized mechanical sealing device made of stainless steel material, with flange connections at both ends, to achieve fluid sealing transmission between static pipelines and rotating equipment. Its core function is to prevent leakage and transport of media under 360 ° rotation

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Stainless steel swivel union

Stainless steel swivel union

Stainless steel rotary joint is a key industrial fluid dynamic sealing device, mainly used to transport media such as water, steam, oil, gas, etc. from fixed pipelines to rotating or swinging equipment. Its core feature is that the main structure is made of stainless steel material (such as 304, 316L, etc.), which has excellent corrosion resistance, high temperature resistance, and mechanical strength

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Centrifugal pump high-speed swivel union

Centrifugal pump high-speed swivel union

The high-speed rotary joint of a centrifugal pump is a fluid dynamic sealing device designed specifically for high-speed centrifugal pumps (usually>3000rpm). Its core function is to deliver the medium in the fixed pipeline to the high-speed rotating pump shaft or impeller system without leakage

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Split type high-speed spindle rotary joint

Split type high-speed spindle rotary joint

The split type high-speed spindle rotary joint is a fluid transmission sealing component designed specifically for ultra high speed machine tool spindles. It adopts a stator and rotor separation structure, which solves the dynamic balance and heat dissipation bottleneck of traditional integrated structures at high speeds. ‌‌

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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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