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Welcome to DDL

Service for planning

Service for planning

  • Tender specification texts
  • Chemical resistance
  • Test reports
  • Ring-Seal selection software
  • Price lists

About DDL

For twenty years, we have been developing and manufacturing wall and pipe penetrations for the construction industry. We serve clients from various sectors such as civil engineering,read more pipeline construction, well construction, container and apparatus construction, industrial plant construction as well as wastewater disposal and public utilities. Every product is scrutinized according to strict guidelines and high quality standards through each phase of development, construction, installation, and delivery. Modern machinery will ensure top quality and meet even the highest standards.

Service for managing construction

Service for managing construction

  • Chemical resistance
  • Test reports
  • Installation guides
  • Ring-Seal selection software
  • Price lists

Seal technology

It is our goal to respond to the constantly changing requirements of the industry and to make new branches accessible. In order to achieve this, we permanently have to enhance and optimize the productsread more already launched and adapt to new developments. This is why we have been providing special solutions for alternative energy sectors like geothermal power and biogas production for some years now. Developing such customized special seals of course requires a close cooperation between our technicians and the planners of these “new energies”.

Service for purchasing

Service for purchasing

  • Order/request forms
  • Test reports
  • Ring-Seal selection software
  • Price lists

DDL products

Our latest group of products is the system cover cable penetration for standard seal packings. In this sector, we also set great value on enhancing existing products with high-quality materials.read more Our compatible seal inserts and packings as well as our products for pipeline construction will meet all your demands. That’s what we stand for.

Request for information

You may request further information about our products with this form:

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