Multibond SMX25 – Flex & Seal
| Code | Description | Size | Colour |
| 130248 | Multibond SMX25 – Flex & Seal | 600ml | White |
| 130249 | Multibond SMX25 – Flex & Seal | 600ml | Dark Grey |
| 130250 | Multibond SMX25 – Flex & Seal | 600ml | Beige |
| 130251 | Multibond SMX25 – Flex & Seal | 600ml | Off White |
| 130252 | Multibond SMX25 – Flex & Seal | 600ml | Concrete Grey |
| 130253 | Multibond SMX25 – Flex & Seal | 600ml | Sandstone |
| 130254 | Multibond SMX25 – Flex & Seal | 600ml | Black |
| 137193 | Multibond SMX25 – Flex & Seal | 600ml | Redwood |
| 173955 | Multibond SMX25 – Flex & Seal | 600ml | Charcoal |
Multibond SMX25 Flex & Seal is a high-quality, neutral, elastic, one-component sealant based on the unique SMX® Hybrid Polymer technology developed by Soudal. As a cornerstone of our MS Sealants collection, this product is engineered to deliver superior sealing performance for demanding building and construction applications.
Designed for Professional Construction Joints
This sealant is the ideal choice for expansion and connection joints across the building industry. It is specifically designed for reliable sealing in prefabricated constructions and for sealing around window and door frames. Because it can be overpainted with water-based paints and varnishes, it is especially suited to applications where a clean, finished appearance and seamless integration with surrounding surfaces are essential.
Why Professionals Choose Multibond SMX25
Multibond SMX25 stands out for its ease of use and long-term durability in varied environmental conditions.
- Superior Handling: It is easy to tool, extrude (even at low temperatures), and finish in all weather conditions.
- Versatile Adhesion: Features good adhesion on most common building materials and typically requires no primer, except in instances where water pressure may occur.
- Weatherproof Performance: Offers good weather and UV resistance, and the formula prevents bubble formation within the sealant, even during high-temperature and high-humidity applications.
- Safe & Durable: Stays elastic after curing and is completely free of solvents, halogens, acids, isocyanates, and phthalates. It is also odourless, making it a comfortable choice for indoor projects.
Need to get your hands on Multibond SMX25? Find your nearest Soudal stockist and start your build with confidence using the industry-leading range.
Technical Documents:
| TDS |
| SDS |
| VOC Statement |
FAQs
Is Multibond SMX25 paintable?
Yes. This sealant can be painted with most water-based systems and varnishes, ensuring a professional, colour-matched finish for your project.
Does it require a primer for application?
In most cases, no. It offers primerless application on many common building substrates, though you should use a primer if the joint is subject to potential water pressure.
Will it bubble in hot or humid conditions?
No. A key benefit of the SMX® Hybrid Polymer technology is that it ensures no bubble formation within the sealant, even when applied in high-temperature or high-humidity environments.
Is this sealant safe for indoor use?
Absolutely. It is solvent-free, isocyanate-free, and odourless, making it an excellent choice for interior sealing tasks.
Does it remain flexible after it cures?
Yes. The sealant is designed to stay elastic after curing, which allows it to accommodate movement within expansion and connection joints.