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How to Choose the Right Union

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Video Library

Video Library

Learn more about Deublin and see our rotating unions in action.  Click below to see our videos.

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Download a Catalog

Click the link below to download our main engineering catalog in English.  To request one of our other catalogs, or to download our main engineering catalog in another language, please click here.


Warranty Information

For a period of one year (two years on 57 Series) from the date of shipment, DEUBLIN warrants that the products sold by it are free from defects in material and workmanship.

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Glossary of Terms

We can help you to understand the technical terminology that is important to the manufacturing and purchasing of DEUBLIN rotating unions.

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Welcome to DEUBLIN >

Welcome to Deublin.com!

Since 1945, Deublin has grown from a small garage shop to the world’s largest manufacturer of rotary unions (rotating unions). Our worldwide distribution network allows OEM’s all over the world to specify Deublin rotary unions when purchasing equipment made in another country. Wherever you’re located, Deublin has a stocking distributor nearby to meet your fluid handling requirements—quickly. Rotary unions must accommodate a broad range of materials, viscosities, temperatures, pressures and speeds. That’s why the Deublin rotary union product line offers over 500 standard rotary unions, over 3,000 separate models, and more than 6,000 individual components to handle them.

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