Silicone Sealant KFA Smar Naskosil A 30 g, neutral curing, for general sealing

KFA Smar Naskosil A 30 g is a neutral-curing silicone sealant by kfa² formulated for general sealing and bonding tasks. Supplied in a compact 30 g cartridge, this neutral silicone cures to form a flexible, durable seal that resists weathering and maintains elasticity over time. The product is suitable for glazing joints, connection joints, and gaps where a neutral-cure system is required to avoid corrosion or staining on sensitive substrates.

Advantages

The neutral-curing formulation minimizes the risk of corrosion on metal substrates and reduces odour compared with acetic silicones. KFA Smar Naskosil A adheres to a wide range of common building materials, providing long-lasting elasticity and resistance to weathering and UV exposure. Its compact packaging allows for precise application in repair and maintenance tasks, and the cured seal has good tear resistance and flexibility for joint movement.

Suitable for

• Sealing glazing and window frames
• Filling connection joints in facades and building elements
• General repairs and maintenance around the home and on construction sites
• Sealing gaps where neutral cure is preferred to protect metal or sensitive finishes

Key specifications

• Colour: neutral (transparent/colourless after curing)
• Packaging size: 30 g cartridge
• Curing type: neutral (oxime or similar neutral mechanism)
• Elasticity: retains flexibility after curing to accommodate joint movement
• Weather resistance: resistant to UV exposure and typical outdoor conditions
• Adhesion: bonds to common substrates such as glass, painted surfaces, many plastics and metals (surface-dependent)

How to use

Ensure surfaces are clean, dry and free from dust, grease and loose particles prior to application. Cut the cartridge tip to the desired bead size and apply the sealant evenly into the joint or gap, maintaining continuous contact with both sides of the joint. Tool the joint within the skin formation time to achieve a smooth finish and good contact with the substrate. Allow the sealant to cure undisturbed according to ambient temperature and humidity; full cure time depends on joint size and site conditions.

Usage recommendations

For best results, test adhesion on a small area if compatibility with plastics or coated surfaces is uncertain. Use appropriate personal protective equipment and follow local ventilation guidance during application. Avoid applying to damp or frost-covered surfaces and do not use where continuous water immersion is expected unless specified by the manufacturer.