Our manufacturing capabilities, services and solutions

We offer a wide range of standard products for cooling your electronics.

If you cannot find what you are looking for in our catalog, we will be happy to work with you to develop a special solution that is tailored precisely to your cooling application. With freely configurable profiles and our technical support, we will achieve the maximum heat dissipation possible.

With our many years of specializing in customized heat sinks made from extruded profiles, we have found our niche in the cooling solutions market. Seifert electronic is certified according to ISO 9001 and ISO 14001. In addition to the quality that comes with this, our customers from a wide range of industries benefit from our wealth of experience when ordering customized special solutions. We are also happy to contribute this to joint research projects with universities and technical colleges.

We make more possible

When it comes to the production of special profiles with the required dimensions for individual services and the creation of prototypes, our extruders are in their cooling element. With our own toolmaking, we make more possible for our customers. We implement smaller quantities as well as the welding of several heat sinks to form one large one.

Seifert electronic offers all production stages you can think of, from unmachined profile sections to fully machined heat sinks with the desired surface finish and mounting. Screwed or pressed-in threaded inserts or bolts, welding work, the mounting of fastening elements, fans or pressure chambers as well as foamed-in seals, prefabrication with TIM materials and special tests are all part of our daily production operations.

Our modern CNC production centers are the basis for a fast delivery of standard and special heat sinks with precisely face-milled surfaces, customized drilling patterns and milling. Our computer-controlled container warehouse offers storage space for 250 tons of high-quality profile cooling elements.

Which cooling solution can we implement for you? ‘Not cool’ is not in our vocabulary.

Our manufacturing capabilities

Cutting to length

  • Sawing of aluminum profiles with circular saws (manual, semi-automatic and fully automatic)
  • Length up to 2000 mm, width up to 1000 mm, height up to 140 mm (larger dimensions with cooperation partner)


  • Brushing of cut edges using semi-automatic and fully automatic machines and manual
  • deburring of small parts using a barrel finishing machine


  • Pressing of finned coolers and profile halves in the area of forced cooling
  • Conventional welding work (MIG/MAG) and friction stir welding (FSW) via cooperation partners

CNC machining

  • 14 CNC machines, work surfaces up to 3220 mm x 800 mm x 600 mm
  • 3- and 4-axis, single and double spindle


  • Standard cleaning of machined components using an automatic washing system with interchangeable basket system

Surface treatment

  • Anodized surface finishing with process computer controlled anodizing machine up to a component length of 1000 mm: anodized colors, silver and black, complete or partial anodizing, combination of anodizing with chromating/passivation
  • Hard anodizing, chromating, passivation, painting via cooperation partners


  • optimum thermal conductivity
  • manufactured from a single piece
  • flexible fin design (thickness, spacing, height)
  • freedom of geometry and design for the cooling dimensions
  • large surface area due to high fin density
  • high strength with low weight
  • low tooling costs enable small batches
  • fast prototypes without tool investment


  • Pinning of PC board cooling elements for PCB assembly
  • Insertion of helicoils, Ensat threaded inserts, press bolts and nuts, etc.
  • Mounting of fan units and fastening elements
  • Application of TIM materials such as thermal paste, PCM, heat-conducting foils, etc.

Special tests

  • Dimensional inspection using a 3D measuring machine, roughness and flatness measurements
  • Leak test of liquid coolers in a water bath
  • Clamping force tests of mounting brackets


  • Part identification using PE labels with plain text, barcode or data matrix