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Fixation of ferritic particles
BSH magnetic

We use permanent magnets to improve operational safety

We use permanent magnets in our screw plugs to ensure that residual ferritic (magnetic) particles are extracted from the surrounding medium and fixed. This prevents these tiny parts from getting stuck in narrow passages, small through-holes, valve seats or on sealing surfaces and other hydraulically important areas and to prevent them interfering with operational safety. The improved cleanliness improves the operational safety and running performance of the machine or system and can extend maintenance intervals.

The magnets are permanently fixed in the screw plugs by being placed in additional drilled holes on the bottom surfaces of the screws where they are held in place. This metallic clamping keeps the magnets in place even under extreme operating conditions and when different media are used. Typical problems that may occur when magnets are glued in, e.g. ageing adhesives or chemical reactions between the medium and the adhesive, do not occur with permanent fixation. The shape, material and polarisation of our permanent magnets can be adapted to the application conditions.

Your benefits

  1. More cleanliness through the fixation of ferritic residual particles from the medium
  2. Improved running capacity and operational safety of the machinery or plant
  3. Longer maintenance intervals
  4. High magnetic attraction force even under extreme operating conditions

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Contact us

Our Sales Team

Our Sales Team

Applications development

Applications development

HR department

HR department


Bilstein & Siekermann GmbH + Co. KG
Industriestraße 1
D-54576 Hillesheim

Video conferencing

In light of the current situation, we will be happy to discuss your topics in a video conference. To arrange an appointment, please contact us and tell us what you would like to discuss at info(at) You will receive a link to the meeting by email.

We have won awards

Awards are a mark of quality. See for yourself!

  • German Brand Award 2019
  • Innovator des Jahres 2018
  • TOP 100 2017
  • Großer Preis der Mittelstandes
  • Beste Arbeitgeber Marke 2019
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