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Home / Products / MS Polymer (Hybrid) Sealant

MS Polymer (Hybrid) Sealant

Solvent-free silane-modified polymer sealant combining the best of polyurethane and silicone chemistries.

Isocyanate-FreeSolvent-FreePaintableLow Odour
MOVEMENT±25%
CURE3 mm/24h
HARDNESS40 Shore A
SHELF LIFE18 months
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↓ Download Datasheet (PDF)

Overview

The best of both. Without the trade-offs.

MS Polymer Sealant is a silane-modified polymer hybrid sealant combining the paintability and strong adhesion of polyurethane with the UV resistance and weatherability of silicone. Solvent-free, isocyanate-free, and low-odour – making it the safest option for indoor and occupied-building applications.

Increasingly specified as a polyurethane alternative on sustainability-focused projects and where indoor air quality is a priority.

Key Features

  • Isocyanate-free and solvent-free chemistry
  • Paintable with water-based and solvent-based paints
  • Excellent adhesion without primer on most substrates
  • UV-stable – does not yellow or chalk
  • Low odour – safe for occupied buildings
  • Compatible with most architectural finishes

Technical Specs

Technical Specifications

All values measured at 23°C unless noted. Full test data available in the datasheet.

PropertyValueUnit
FormSingle-component moisture-curing–
Active polymerSilane-modified polyether–
ColourGrey / White / Black / Custom–
Density1.45 ± 0.05g/cm³
Tack-free time at 25°C/50% RH30–60minutes
Cure rate3mm/24h
Hardness (Shore A)40 ± 5–
Tensile strength≥ 2.0MPa
Elongation at break≥ 500%
Movement capability±25%
Service temperature−40 to +90°C
Application temperature+5 to +40°C
Packaging290 ml / 600 ml–
StandardsISO 11600 F-25LM · EC1 Plus–

Applications

Where this product is used

Six typical site applications where our crews specify this product.

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Indoor joint sealing

Occupied building applications with air-quality requirements.

🏫

Schools & hospitals

Sensitive-environment sealing with low VOC emissions.

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Façade joints

External façade joint sealing on UV-exposed elevations.

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Wet area joints

Bathroom and kitchen joint sealing under coatings.

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Green buildings

LEED and Estidama-targeted projects requiring low-emission materials.

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Joinery & fit-out

Interior trim, skirting, and cabinetry sealing applications.

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