Butylver SS

Polyisobutylene-based primary sealant

Butylver SS, Premium PIB-Based Primary Sealant for High-Quality Insulation Glass Units

Butylver SS is a primary sealant that serves as the first barrier for internal insulation (Butyl) in insulating glass systems. Made from polyisobutylene (PIB), it is a single-component, solvent-free solution designed to seal spacer edges effectively, preventing moisture ingress and gas escape.
Butylver SS is a premium-grade formulation within the Butylver series, engineered to work seamlessly with a wide range of flexible spacers. Compared to Butylver Standard, it offers a slightly softer consistency, ensuring exceptional performance during the pressing phase of IGU manufacturing. It conforms effortlessly to the shape of flexible spacers, providing an outstanding barrier against gas leaks and enhancing the integrity of the entire insulation system.

Outstanding features
Certificates and Accreditations
Compliance with international standards

Outstanding features

Exceptional resistance to water vapor and gases, ensuring long-term protection.
Strong adhesion to the glass and flexible foam spacers, promoting reliable sealing.
Superior UV resistance and color stability in outdoor settings.
Zero shrinkage, maintaining structural integrity over time.
Low thermal conductivity (0.2 W/mK, EN 10077-2) for enhanced energy efficiency.
High shear resistance, preventing glass panes from sliding during IGU handling after the sealing process in IGU manufacturing.
Minimized cold-flow movement towards visible window areas, ensuring a neat and visually pleasing finish.

Certificates and Accreditations

Butylver SS is approved by:

Applus+ / Spain
UNI / Italy
Cekal / France
RAL 520 / Germany
IGCC-IGMA / North America

Compliance with international standards

Butylver SS fulfils requirements of the following International Standards:

* EN 1279-2 (Insulating Glass Unit - Moisture Penetration requirements)
* EN 1279-3 (Insulating Glass Unit - Gas Leakage Rate and Gas Concentration requirements)
* EN 1279-4 (Insulating Glass Unit - Physical attributes of edge seal components)
* EN 15804 (EPD - Environmental Product Declaration)

* ASTM E2189-10 (Resistance to Fogging in Insulating Glass)
* ASTM E2190-10 (Insulating Glass Unit Performance)

Application guidelines

Before application, it's crucial to thoroughly clean and dry the surfaces, ensuring they're free of any dust or grease. Heating the Butylver SS sealant to temperatures between 110°C to 130°C is essential prior to its application using extruders.

For technical support and further information about our insulating glass solutions, please contact our professionals.

Packaging Format

Available in:

Cylinders of 6,5 Kg (Ø 190 mm).

Drums of 200 Kg.

Shelf life & Storage

Butylver SS has a shelf life of 12 months when stored in its original containers. For optimal performance, it is recommended to store it in dry and cool rooms with temperatures maintained between +10 °C and +30 °C.