Structural GlazingFacadeNeutral CureAluminum
Somafix Glass Seal Silicone S391
S391 is a professional-grade neutral silicone that provides excellent primerless adhesion to aluminum, iron, and concrete. Unlike acetoxy silicones, it is non-corrosive and unpaintable, ensuring long-term optical clarity for glass systems and building facades. It features high UV stability and zero shrinkage.
Applications
- Glass curtain wall systems
- Aluminum and iron facade insulation
- Bonding polyester and PVC surfaces
- High-performance building isolation
Distribution enquiries welcome. Somafix Kenya is the authorised regional distributor. Contact us via WhatsApp for pricing, pack sizes, and bulk availability.
Technical Specifications
| Chemical Base | Alkoxy-Neutral |
| Density | 1.22 g/cm³ |
| Tensile Strength | 1.0 N/mm² |
| Shore A Hardness | 25–30 |
| Thermal Resistance | -40°C to +180°C |
| Skin-over Time | 5–12 minutes |
| Ultimate Elongation | 300–350% |
| Pack Size | 300 ml cartridge / 600 ml sausage |
* All specifications are indicative. Refer to the official Technical Data Sheet (TDS) for full details. Download via the catalogue link above.
Other Silicone Products
View all
Somafix Universal Silicone S200
One-component, elastic, solvent-free 100% silicone for multi-purpose DIY and construction.

Somafix Universal Tube Silicone
One-component, elastic, solvent-free 100% silicone for precision DIY and wood bonding.

Somafix Neutral Mirror Silicone S381
Solvent-free, non-corrosive silicone for damage-free mirror bonding.
