Low Modulus One-Component MS Sealant
Simseal Infernoflex® MS Fire Rated Hybrid Sealant is a high-performance, single-component sealant formulated with advanced MS Polymer technology. Engineered for fire-rated expansion joints and construction applications, it delivers excellent adhesion on a wide range of substrates—no primer needed. Its isocyanate-free formula allows safe use on damp surfaces without bubbling, and it remains permanently flexible. Infernoflex MS meets BS EN 1366-4:2006 fire compliance, is paintable with most industrial coatings, and is certified low VOC—making it ideal for sustainable building projects and environmentally conscious specifications.
Properties:
• 4 hours fire rating
• ASTM C920 compliant
• ±25% movement capability
• Good UV resistance
• Low static charge – Less dirt streaking
• Silicone-free – Paintable
• Isocyanate-free – No air bubbling
• Solvent-free – No shrinkage
• Reactive plasticizer – Non-staining
• Primerless bonding to most surfaces
• Not containing any halogenated
materials
Applications:
- Insitu concrete floors and walls
- Precast and tilt up panels
- Brickwork and blockwork
- Rendered masonry
- Plasterboard (Fire rated and/or acoustic rated)
- Fiber cement sheet (Fire rated and/or acoustic rated)
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Properties:
• 4 hours fire rating
• ASTM C920 compliant
• ±25% movement capability
• Good UV resistance
• Low static charge – Less dirt streaking
• Silicone-free – Paintable
• Isocyanate-free – No air bubbling
• Solvent-free – No shrinkage
• Reactive plasticizer – Non-staining
• Primerless bonding to most surfaces
• Not containing any halogenated
materials
Applications:
- Insitu concrete floors and walls
- Precast and tilt up panels
- Brickwork and blockwork
- Rendered masonry
- Plasterboard (Fire rated and/or acoustic rated)
- Fiber cement sheet (Fire rated and/or acoustic rated)
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