Pneumatic rotary joint is a precision sealing device that transfers gas media from static systems to dynamic rotating systems, widely used in industrial automation, mechanical manufacturing, and fluid control fields. As a key component connecting the fixed gas source and rotating equipment, it achieves continuous gas supply under 360 degree unrestricted rotation, while effectively preventing medium leakage, pressure loss, and external pollution

Pneumatic swivel union

Pneumatic rotary joint is a precision sealing device that transfers gas media from static systems to dynamic rotating systems, widely used in industrial automation, mechanical manufacturing, and fluid control fields

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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.

1109-929-930 high-speed rotary joints

1109-929-930 high-speed rotary joints

1109-929-930 high-speed rotary joints are specialized precision rotary connection components for industrial high-cycle fluid and pneumatic systems. Featuring ultra-low torque rotation, high dynamic balance performance, wear-resistant sealing structure and stable pressure resistance, this dedicated model maintains continuous leak-free operation under long-term high-speed rotation, ensuring efficient and reliable medium transmission for automated high-speed rotating equipment.

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Sanitary grade pipeline rotary joints

Sanitary grade pipeline rotary joints

Sanitary grade pipeline rotary joints and quick change clamp rotary joints are two key components. The former solves the problem of dynamic rotary sealing, while the latter provides static or semi dynamic quick disassembly and assembly connections

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1890-060 Winder Slitting Machine Rotary Joints

1890-060 Winder Slitting Machine Rotary Joints

The dual channel universal hydraulic 1890-060 rewinder slitting machine rotary joint is particularly suitable for rotating equipment that requires simultaneous input and output of two different media (such as hydraulic oil inlet and outlet, coolant circulation, etc.)

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Hydraulic oil pressure high-speed rotary joints

Hydraulic oil pressure high-speed rotary joints

A dual channel hydraulic oil pressure high-speed rotary joint is a mechanical sealing device used to transfer two different fluid media (usually two independent hydraulic oil circuits, or one oil and one water/air) from a stationary pipeline to a rotating component

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Pneumatic rotary joint through-hole slip rings

Pneumatic rotary joint through-hole slip rings

Pneumatic rotary joint through-hole slip rings are integrated hollow rotary connection components combining pneumatic transmission and slip ring signal conduction. Featuring central through-hole design, low-resistance smooth rotation, reliable gas sealing and stable signal transmission, these composite slip ring rotary joints realize synchronous non-interfering delivery of pneumatic media and control signals, meeting multi-functional connection demands of rotating automated equipment.

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4-in-4 pneumatic swivel unions

4-in-4 pneumatic swivel unions

4-in-4 pneumatic rotary joint (also known as slip ring or multi-channel rotary joint) is a precision mechanical device used to transmit compressed air, vacuum, or other gas media between fixed and rotating components

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3-in-3 pneumatic swivel union

3-in-3 pneumatic swivel union

3-In-3-Out Pneumatic Rotary Joint is a precision mechanical sealing device specifically designed to solve the problem of multi-path gas transmission between rotating components and fixed gas sources

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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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