Quanex Edgetherm® 3400 is a hot-applied desiccant matrix sealant for the air space of an insulating glass (IG) unit, offering optimal absorption for both existing and invasive moisture. Designed for ease of application with a variety of equipment, Edgetherm 3400 will not transfer onto a gas-filling probe for cleaner and easier gas-filling. It’s an ideal IG sealant for use with rigid spacers.