Kofinity - 4SG
Kofinity - 4SG
The industry’s first and only truly fusion bonded spacer.
The Kōfinity 4SG Fusion Bonded Spacer has redefined the standard in warm-edge insulating glass technology. First on the market in 2009 as Ködispace® 4SG, its chemistry creates an ultra-tight molecular bond with the glass panes, virtually eliminating seal failure, supporting exceptional thermal performance and delivering proven durability. Fusion bonded spacer technology doesn’t just stick to the glass, it fuses.
H.B. Fuller’s Kofinity 4SG Warm Edge System is the premier solution for both commercial and residential applications. Characterized by high energy efficiency, superior gas retention, and automated processes resulting in more precise spacer placement, Kofinity 4SG is the first reactive thermoplastic spacer system available.
H.B. Fuller Kofinity 4SG, initially developed for structural glazing façades, is now widely used in insulating glass for both residential and commercial applications. Its unique material properties create highly durable and energy-efficient insulating glass units (IGUs). Unlike conventional thermoplastic spacers, Kofinity 4SG’s chemically bonds to both the glass and silicone edge seal, ensuring long-lasting energy efficiency and durability.
Product Type: Reactive Sealant
Application Area: Doors, Insulating Glass, Spacer, Windows
Chemical Family: Polyisobutylene Polymers (PIB)
Compatible Substrates & Surfaces: Glass
Equipment Features: Durable, Excellent Energy Performance, Flexible, Gas Retention, High Temperature Stability, Low Moisture Vapor Transmission Rate, Robotically Applied