MS Polymer vs Traditional Silicone: 5 Reasons Hybrids Dominate in 2025
Silicone has sealed kitchens and façades for decades, but a new generation—MS polymer hybrid sealants—is rewriting the rule-book. Below you’ll discover the five areas where hybrids outperform classic silicone and why the Suf-Fix Hybrid Sealant Series is the smartest choice for contractors and DIYers worldwide.
1 | Superior Bond Strength
Hybrids achieve 400 kg / 25 mm² structural adhesion on porous and non-porous surfaces, while neutral silicones average 180 kg.
2 | Paintability & Finish
Cured hybrids accept most water- or solvent-based paints without primer—silicone usually rejects paint or needs special etch primers.
3 | Broad Substrate Compatibility
Glass, aluminium, PVC, damp concrete, galvanised steel—MS polymer grips them all; silicone struggles on wet or alkaline surfaces.
4 | Low VOC & Neutral Odour
Suf-Fix hybrids emit ≤ 40 g/L VOC, meeting global green-building standards. Acid-cure silicones release acetic vapour that corrodes metals and smells sharply.
5 | Fast Cure with Zero Shrinkage
Hybrids skin in 10 min and fully cure in 24 h with virtually no volume loss; neutrals often need 48–72 h and can shrink 3-5 %.
Feature Comparison at a Glance
Feature Suf-Fix Hybrid Typical Silicone Bond strength 400 kg / 25 mm² ≈ 180 kg Full cure 24 h 48–72 h Paintable Yes Rarely* VOC ≤ 40 g/L 100–300 g/L Movement ± 25 % ± 20 % Damp-surface adhesion Yes Limited
*Paintable silicones exist but require specialty primers.
Spotlight on the Suf-Fix Hybrid Sealant Series
24 h structural cure, even at +5 °C.
Primerless adhesion on damp mineral substrates.
Colours: Pure White, RAL 7040 Grey, Crystal Clear.
EN 15651-3 sanitary mould score 0 / 28 days.
Solvent- & isocyanate-free; low odour indoor use.
Real-World Applications
Kitchen Worktop → Backsplash – no vinegar smell; paint matched in 24 h.
Exterior Window Perimeters – handles UV & freeze-thaw without chalking.
Metal Roof & Gutter Joints – acid-free formula avoids galvanic corrosion.
Frequently Asked Questions
Can I use Suf-Fix Hybrid in a bathroom? — Yes, sanitary mould-resistant.
Will it bond over old silicone? — Remove old silicone first for best adhesion.
Does it shrink? — Virtually zero shrinkage during cure.