The quality of a lighting system depends crucially on how reliably the luminaire housings are sealed. With our high-quality, efficient sealing and potting solutions using automated Formed-In-Place-(Foam-Gasket) technology, we offer you optimal protection for your light fixtures and lighting systems. 

Whether for street lighting, building lighting, wet-room lighting or illuminated signs: Henkel’s innovative 2-component material systems based on polyurethane or silicone for sealing and potting of luminaire housings and lighting electronics can be found in countless applications.

You can choose from FERMAPOR K31 sealing foam systems for sealing light fittings for indoor and outdoor use, for example, to protect illuminated signs against water from sprinkler systems in the event of a fire. Or, we offer you FERMADUR potting systems for encapsulating LED lightings.

Our polyurethane material systems are used for weather protection of outdoor lighting or for information lights, e.g. against extinguishing water in case of fire.

We also supply the highly temperature-resistant silicone foam systems from the FERMASIL series. In addition, the special properties of our silicone foam formulas fulfill the requirements for sealing ATEX-tested light fixtures in hazardous environments such as e.g. the mining industry or on drilling platforms.

For years, the leading manufacturers of lighting products have been placing their trust in our dosing technology and wide selection of innovative material systems for sealing their luminaire housings.

Are you looking for more efficient, more economical material usage for sealing your light fixtures than can be achieved with conventional seals, for example rubber seals? Or maybe a cheaper solution than 2C injection molding without tooling costs?

We supply you with a cost-efficient and perfectly coordinated system solution comprising both the machine and the material. For housing sealing or LED potting applications, we formulate a sealing foam to fit your requirements. The metered application directly onto the component is fully automatic, high-precision, and delivered with process stability by our mixing and dosing machine.

Do you also ask yourself how you can make your production processes more efficient with large quantities and short cycle times?

Using our fast-reacting FERMAPOR K31 FAST-CURE polyurethane foam gasket systems, you can make cost-efficient and optimized manufacturing processes a reality.

Long curing times (or intermediate storage) for parts that have just been sealed are thus a thing of the past, because the short tack-free times of the sealing foams allow the luminaire housings to be rapidly processed through to final assembly.

Sealing, gluing and potting from a single source

With SONDERHOFF SYSTEM SOLUTIONS (S3) you get everything from a single source, from material systems to mixing and dosing systems to contract manufacturing.

As process experts, we offer OEMs and suppliers individual advice on automation and application technology. Our material solutions with different properties include foam seals based on polyurethane or silicone as well as systems for gluing and potting. We support you with application-technical advice from the construction phase of the components to the fully automatic material application with FIPFG technology.

Alternatively, our contract manufacturing service gives you the option of us taking on the sealing, gluing or potting of your components directly for you, from the sampling of prototypes and small series to large-scale production.

Sealing of linear luminaires

Luminaire housings for interiors are sealed with our FERMAPOR K31 foam seals based on polyurethane.


Sealing of street lamps

When it comes to street lighting under often extreme weather conditions, the most important thing is the robust protection of the lamps and electronics. This goal is achieved by sealing the luminaire housing with the silicone-based FERMASIL material systems. They are temperature resistant from -60 ° C to +180 ° C. They are set by us in such a way that the luminaire housings achieve seals of up to IP 69K.


Sealing of illuminated signs and LED potting

Illuminated signs to be installed in offices, production facilities, public buildings, underground garages and tunnels need to be sealed with 2-component polyurethane foam seals from FERMAPOR K31 series against the fire-fighting water from sprinkler systems in case of a fire. It prevents ingress of water inside the housing and thus, the lighting electrics from being shorted out by moisture which would cause the signs to fail.

For indoor and outdoor illuminated signs, the LEDs used are often also protected from water, dust and other weathering effects by sealing them with casting resins.