Rotary Unions

Customized Solutions

Oil & Gas Solutions

We are a leading provider of advanced fluid sealing solutions for the global oil and gas industry.

We are committed to pushing innovation within the oil and gas industry - from solutions for top drive and coiled tubing systems, to subsea and topside flowlines/hoses, and umbilical hose reel systems.

Our focus is on manufacturing the best fluid sealing solutions helping our customer’s reduce operational costs, increase production, optimize safety, and (most importantly) minimize risk.


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Mobile Solutions

Our fluid sealing products deliver precision & durability for demanding mobile applications

Whether you are a large corporation looking to integrate our products into a fleet of vehicles or just in need of replacing a wore-out part or two, we produce the most dependable and advanced swivel joints (rotary unions) in the industry.

Standard (off-the-shelf) and custom, single and multiple-flow passage designs provide a flexible and cost-effective solution meeting your exact fluid, operating pressure, speed, and spatial requirements for each unique application.


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Industrial Solutions

We provide fluid sealing solutions for factory and industrial automation applications

Our rotary unions (joints) deliver the precision, speed, and reliability needed for today’s manufacturing, processing, and packaging automation systems. Developed for pneumatics, hydraulics, and other media services, we offer standard in-stock and custom products with options for integrating electrical slip rings to provide a complete fluid-electrical solution.


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Aerospace & Space

We provide fluid sealing solutions for aerospace applications

Withstanding extreme temperature cycles, excessive vibration and g-forces, together with our partner we can provide government and commercial aerospace capability-driven fluid rotary unions, custom tailored to integrate within air and space-based platforms.


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Possible Modifications

Our proven technology customized to fit your needs and requirements

Housing, Shaft & Seal Material Options

Temperature, media, speed, pressure and environment all have a big impact on the performance of our products. If your application requirements fall outside our standard product's specifications we'll review all possibilities, including the use of different material options.

Configuration Options

We understand that not all of our standard products will integrate directly into your equipment. We've designed them to be as universal as possible but sometimes that just isn't enough.

Our engineering team will work fast at finding a solution that better suits your mounting and connection needs.

Housing & Shaft Dimensional Changes

Applications with very tight or unique size constraints are often limited on the selection of rotary union options available - therefore, require some form of modification. Regardless of the scale of complexity of a change, DSTI will work side-by-side with your team to deliver a product that fits your exact spacial requirements.

Application Notes

Our application note showcases our products in relevant context to make it easier for you to understand why our products are the best on the market. Not only do we offer standard solution, we have modified and customized solutions for you to order.

Click here for our Application Notes