Thermal spray coatings: impregnation and sealing

Safety that goes deep! Capillary-active impregnation and sealing of thermal spray coatings. Reliable penetration protection against water, oils, air, gases and aggressive media. Sustainable quality with short process times and low costs.


TS layers always have process-related porosities and micro-cracks. As a result, they are not gas-tight and permeable to liquids. It is possible that under the thermal spray coating corrosion occurs on the substrate and leads to premature failure of the coating. As a consequence, the TS coatings can not reach their expected service life, they fail prematurely.


In order to prevent the infiltration of corrosive media to the substrate, the coating must be provided with a protective barrier. The goal of sealing is to close or fill all open cavities. Dichtol is a capillary-active sealer that penetrates deeper into porous thermal spray coatings than comparable products. The simple and versatile application of Dichtol (brushing or spraying) makes it easy to use even on complex structures. Flame, plasma, arc and even HVOF sprayed coatings are protected against premature failure by sealing with Dichtol. Permanently!

Maximum tightness: Dichtol from DIAMANT®

Extend the service life of your thermal spray coatings! Our polymer sealer provides permanent corrosion protection, is solvent and temperature resistant, can be processed on hot surfaces up to 120°C and has a solids content of up to one hundred percent! We are happy to develop, together with you, the right sealer for your specific application.

REM overview enlarged 100x. RBSD (ZnAl15 Arc Spray Layer)

REM overview enlarged 100x. RBSD (ZnAl15 Arc Spray Layer)

Without vacuum or pressure, you can use Dichtol from DIAMANT® by spraying or painting for maximum tightness and add extra safety and function (such as dielectric strength) to your TS coating.

Product Highlights:

  • Dichtol WFT: Ready to use, no mixing, drying at room temperature
  • Dichtol HM: 100% solid, can be used on hot surfaces up to 120°C
  • Dichtol HTWG: Water-based, high-temperature application up to 700°C
  • Dichtol HTR: Reliable protection with perfect penetration up to 500°C
  • Drinking water and food approval (only WFT and WFT macro)

The DIAMANT guarantee >>

We have the right sealer for you! If you are not satisfied with one of our standard sealers, our lab technicians will develop a sealer that fits your requirements!!!

DIAMANT®: ready-to-use polymer systems directly from the manufacturer 

DIAMANT® GmbH is your professional partner for the sealing of thermal spray coatings of all kinds. Whether flame spray coatings, arc, or APS coatings, HVOF or plasma coatings, we have the right sealer for you.

Your advantages with products and the service of our traditional company:

  • Professional employees with solid product knowledge (ETSS training, GTS membership)
  • Sealings penetrate deep down. Detectable for every spray coating !! Ask for our permeability test and get proof that your sealer works!
  • Large product range. We have the right sealer for your application.
  • Quality and know-how from the manufacturer. No purchase products, everything from own production!

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