We are closed on Thursday, May 29th and on Friday, May 30th, 2025.

The DDL® GmbH
Implementation technology & sealing systems

For over 20 years we have been developing and manufacturing feedthrough technology & sealing systems – wall feedthroughs, pipe feedthroughs and cable feedthroughs – for the construction industry.

General Pipeline Construction
Biogas Facilities
Solar Panels and Wind Power Plants
Wastewater Disposal
Water Supply
Substations
International Projects
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Quality products from DDL®

Our compatible system inserts and sealing packings, as well as our products for pipeline construction, meet every requirement – that’s what we stand for.

Go to Products ›

Documents & Brochures

Find brochures, flyers, assembly instructions, schematic drawings, test documents and tender texts available for download.

All downloads ›

News

  • Holidays in May

    Our company is closed on Thursday 01.05.2025 and Friday 02.05.2025 as well as on Thursday 29.05.2025 and Friday May 30,… read more ›

  • The new DDL website

    Experience all the products and information in our new clear design. read more ›

  • New management

    On August 1st, Steffen Handte took over the position of Managing Director at DDL GmbH. Steffen Handte has been part… read more ›

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