Sealant-adherent Sika SIKAFLEX 11FC PURFORM 300 ml — concrete grey

Sika SIKAFLEX 11FC PURFORM 300 ml in concrete grey is a one-component polyurethane-based sealant and adhesive designed for building and maintenance applications where a combination of elasticity and strong adhesion is required. It cures by reacting with atmospheric moisture to form a durable, flexible elastomer suitable for sealing joints, bonding substrates and performing repair work on a variety of common construction materials. The product is offered in a 300 ml cartridge format for application with a standard caulking gun and provides a concrete grey color that matches many masonry and concrete surfaces.

Advantages

Sika SIKAFLEX 11FC PURFORM delivers reliable adhesion to concrete, metal and many other common building substrates while retaining elasticity during service. Its one-component formulation requires no mixing, simplifies on-site use and reduces application time. The cured material resists aging and provides a durable seal that accommodates movement in joints and connections. The concrete grey shade allows for discrete repairs and finishing on masonry elements and structural concrete.

Suitable for

• Sealing expansion and connection joints in concrete structures
• Bonding and sealing metal-to-concrete or concrete-to-concrete joints
• Gap filling and repair work on masonry and structural surfaces
• Maintenance tasks where elastic, load-bearing seals are needed

Key specifications

• Base: one-component polyurethane
• Format: 300 ml cartridge for caulking gun application
• Color: concrete grey
• Function: combined sealant and adhesive with elastic cure
• Curing mechanism: moisture-curing to a flexible elastomer
• Typical applications: joint sealing, bonding, gap filling, repairs

How to use

Ensure surfaces are clean, dry and free of dust, grease or loose material before application. Cut the cartridge tip to the required bead size and use a caulking gun to apply Sika SIKAFLEX 11FC PURFORM into the joint or onto the substrate. Tool the bead within the skin formation time to obtain a smooth finish and ensure good contact with the joint faces. Allow the sealant to cure by exposure to atmospheric moisture; curing time depends on bead size and ambient conditions. Remove uncured sealant with an appropriate solvent; cured material must be removed mechanically.

Usage recommendations

The product should be used following applicable local building codes and Sika’s technical guidance for joint design, substrate preparation and compatibility with primers or backer rods when required. For critical or load-bearing joints and where adhesion to specific materials is uncertain, perform a preliminary adhesion test. Store cartridges in a cool, dry place and use within the manufacturer’s stated shelf life.