DOMOFLEX Black – the superior alternative to silicone sealants
Are you looking for a reliable alternative to silicone that still seals even if the surface isn’t completely dry?
DOMOFLEX Black adheres to most substrates without primer and can even be applied in rain or snow on wet, smooth surfaces—perfect for repairs and connections around the house.
Why DOMOFLEX?
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Seals on damp surfaces – ideal in changing weather conditions
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Also adheres to slightly oily surfaces
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Silicone-free and black
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Weather- and UV-resistant – suitable for indoor and outdoor use
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Paintable / compatible with most paints
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Very good mold resistance
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Compatible with bitumen and copper
Typical applications
DOMOFLEX is especially suitable for expansion and connection joints, e.g.:
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Facade and exterior connections
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Glass and window connections
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Sanitary and wet areas (as a silicone alternative)
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Roofing / sealing work around the house
Adheres without primer to, among others: masonry, concrete, plaster, wood, metal, glass, bitumen, PVC, and many plastics.
Application – for a clean, watertight result
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Ensure contact areas are clean and stable.
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Backfill joints according to DIN 18540 using PE backer rod.
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Store the cartridge at room temperature before application.
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Smooth surfaces may be wet; open-pored substrates should be dry.
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Use plenty of soapy water for subsequent smoothing.
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Joint edges can be masked (remove tape immediately after tooling/smoothing).
Technical data (excerpt)
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Chemical base: synthetic rubber
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Application temperature: +5 °C to +40 °C
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Temperature resistance: -25 °C to +100 °C
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Permissible total deformation: max. 25%
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Tooling time: approx. 15–20 minutes
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Cure: physical drying, several mm per day
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Color:black
Storage
Shelf life at least 2 years at room temperature; do not store above 60 °C; not sensitive to frost.
Safety notice
Contains solvents / flammable – please observe safety instructions (do not inhale vapors, avoid contact with skin/eyes).
