We now offer shipping to selected EU countries! Order now and enjoy reliable delivery.
We now offer shipping to selected EU countries! Order now and enjoy reliable delivery.
Under-corrosion can damage spray coatings and lead to flaking. A good sealer protects the thermal spray coating from corrosion damage. Find out more about our solution for corrosion protection of thermal spray coatings.
Insulation layers made of Al2O3 or Cr2O3 are microporous and partly hygroscopic. The electrical insulation of the layer can be impaired if moisture is trapped in the pores. Our sealants ensure the insulation properties and protect the layer from corrosion.
Non-stick properties are required in a wide range of applications. The right sealer protects the thermal spray coating and creates a repellent boundary layer that prevents particles, liquids and other substances from adhering. Find out more about our portfolio of non-stick sealers.
Further case studies
At temperatures between 300 °C and 1,500 °C, we speak of high-temperature applications. Even under these operating conditions, the sealant must guarantee protection of the thermal spray coating. Our high-temperature-resistant sealers are suitable for continuous use.
Gas-tight spray coatings for hydraulic and pneumatic applications
Spray coatings for hydraulic and pneumatic applications must be gas-tight to prevent pressure losses and the leakage of hydraulic fluid. A suitable sealer can permanently and reliably seal the micropores in the spray coatings.
Improved friction and sliding properties with sealants
The static and dynamic friction properties of thermally sprayed coatings can be reduced by using suitable sealants. As a result, the mechanical machinability of the spray coating can also be improved.
How deep does the sealer penetrate into the spray coating?
We have been dealing with this question for over 10 years. To answer this question, we have developed our own test, which allows us to verify not only the penetration depth but also the impermeability of the coating. We would also be happy to test your coating and optimize our sealer to your requirements.
Individual development and customization of sealers
Get the most out of your spray coating and the sealing process. As a specialist in sealers, we help you to find the right sealer with a deep effect and to set up a process that saves time and money.
No problem! Our expert Carsten Kunde will be happy to help you find the perfect solution for your requirements.
On our website you will find a selection of products that we use for sealing thermal spray coatings. In addition to this public selection, we also have a very large portfolio of special sealants. Please contact us, we will be happy to help you choose the right sealer.
Yes, we have created a Siegler selection guide for better orientation.
We will be happy to send you this selection guide.
Our high-temperature sealers offer a permanent temperature resistance of up to 1,000°C / 1832 °F. With special additives, this limit can be sifted up to 1,500 °C or 2732 °F. We will be happy to provide you with further details in a personal consultation.
The penetration behavior of the sealer in a spray coating depends on many parameters and cannot be specified in general terms. Tests must be carried out to determine the penetration behavior. We are not only interested in the penetration depth, but rather the depth to which the sealer seals the spray coating. To determine this, we have developed our own test, the DIAMANT penetration depth function test. With this test, we can reliably check the function of the sealer and adapt the sealer to the coating. We will be happy to present the penetration depth function test to you in detail in a personal consultation.
All dichtol variants without PTFE are not covered by the PFAS Directive. The following distinctions must be made for variants in which PTFE is incorporated:
EU (REACH regulation): Current bans and restrictions mainly concern soluble or mobile PFAS, not high molecular weight polymers such as PTFE. The legal situation with regard to a possible general PFAS ban in 2026 is currently unclear.
USA (EPA guidelines): The EPA focuses on mobile and bioaccumulative PFAS. PTFE is therefore not currently banned.
What does the future hold for PTFE? No one can answer this question with certainty at present. We do not currently expect a complete ban on PTFE, even if the PFAS Directive is tightened. Future regulations could affect production and processing in particular.
Unfortunately, we cannot make a general statement on this. Insulating bearing rings differ in terms of layer properties and specification with regard to insulation resistance, voltage, frequency and other parameters. In our opinion, it is essential to understand such a complex system and to select the sealant accordingly. We have extensive experience in the field of insulation sealing of bearing rings.
For metallic corrosion protection coatings, the regulations of DIN EN ISO 2063-1 must be observed. In principle, many sealer systems are suitable here, as the requirements for e.g. temperature resistance, chemical resistance, etc. are not very high. However, things get tricky when the spray coating has to meet a specific corrosion protection class (e.g. C4, C5-M, etc.). Proof of the protection class must be provided for the coating + sealer. We will be happy to help you find the right sealer for your application. We have our own salt spray testing facility in our laboratory.
For corrosion protection sealers, we recommend application immediately after spraying. The aim is to ensure that the pores in the spray coating are clean and open and that moisture, salt or other substances have not already accumulated in the pores. The sealer is applied atmospherically, i.e. without the aid of machines or a vacuum. It therefore only penetrates the pores via the capillary effect. This requires uncontaminated, open pores. Another decisive factor is the application quantity. To enable maximum penetration, it is necessary that there is sufficient sealer liquid on the surface. We therefore recommend brushing or spraying the surface generously with sealer and applying several coats to ensure that a liquid film of sealer is present on the surface for at least 5 minutes. The sealer can be applied by brush, roller or spray gun.
This depends very much on the sealer selected. In general, it can be said that silicones are more difficult to paint over than epoxy resins or acrylates. We have already tested many commercially available corrosion coatings for compatibility in our laboratory. We would also be happy to test your corrosion system of choice for compatibility with our sealer
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