Sika Sikaflex-291i 300 ml black polyurethane sealant for flexible, durable joints on concrete, metal, and wood in building and construction applications.
The Sikaflex-291i is a single-component polyurethane sealant from Sika, designed for bonding and sealing a wide range of building and construction materials.
Creates a durable, flexible seal that accommodates movement and vibration without cracking
Adheres to concrete, metal, wood, glass, and most common building substrates
300 ml cartridge format for precise application in joints and gaps
Black colour blends with dark surfaces and resists staining from weather exposure
Das zeichnet Sikaflex-291i aus
Unlike rigid sealants that fail under thermal expansion or structural movement, the Sikaflex-291i remains elastic over its full service life. The polyurethane formula delivers strong initial adhesion and maintains bond strength across a broad temperature range, making it suitable for both interior and exterior use.
Ideal for...
Professional builders and tradespeople working on façade joints, window perimeters, roof connections, and expansion joints in concrete and masonry. Also suited for industrial maintenance tasks where a reliable, long-lasting seal is required on metal and concrete surfaces.
Anwendung von Sikaflex-291i
Clean the substrate thoroughly and remove all dust, grease, and loose particles. Cut the cartridge nozzle to the desired bead width. Apply the sealant in a continuous, even bead and smooth with a spatula or finger to ensure full contact. Allow 24 hours for initial skin formation before exposing the joint to water or movement.
Sika is a Swiss-based global manufacturer of chemical products for the building and industry sectors, founded in 1910 and headquartered in Zurich. The company specialises in adhesives, sealants, and protective coatings, and is one of the leading suppliers of construction chemicals worldwide.
It is a polyurethane sealant used for bonding and sealing joints in building construction, including façade joints, window perimeters, roof connections, and expansion joints in concrete and masonry.
It bonds reliably to concrete, metal, wood, glass, and most common building substrates. Always check compatibility with the specific substrate before application.
Product type: sealant (Dichtmasse). Volume: 300 ml. Colour: black. Weight: 0.456 kg. No warranty period specified by the manufacturer.
One 300 ml cartridge of Sikaflex-291i black sealant.
Store the cartridge in a cool, dry place away from direct sunlight and frost. Keep the nozzle sealed when not in use to prevent the sealant from curing inside the cartridge.
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